ruby on rails AbstractController::Helpers::MissingHelperError: Missing helper file helpers//
ruby on rails AbstractController::Helpers::MissingHelperError: Missing helper file helpers//
我刚刚从另一台计算机上克隆了我正在使用的存储库。当我尝试通过 运行 'rake db:migrate' 进行数据库迁移时，出现以下错误：
AbstractController::Helpers::MissingHelperError:
Missing helper file helpers//users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper.rb
我已经试过这里的最佳答案：
它说要在终端中执行以下操作：
cd ~
mv projects projects1
mv projects1 projects
我也试过：
sudo ln -s Users users
但这对我不起作用。我该怎么办？
更新：
这是我的堆栈跟踪：
ps-MacBook-Pro:projectlion psmith$ rake db:migrate
rake aborted!
AbstractController::Helpers::MissingHelperError: Missing helper file helpers//users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper.rb
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:154:in `rescue in block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:151:in `block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `map!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/metal/helpers.rb:93:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:111:in `helper'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/railties/helpers.rb:17:in `inherited'
/Users/psmith/projects/clie/projectlion/app/controllers/application_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/core_ext/string/inflections.rb:66:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise_controller.rb:2:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise/sessions_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:55:in `<module:Devise>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:6:in `<module:ActiveAdmin>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:5:in `<top (required)>'
/Users/psmith/projects/clie/projectlion/config/routes.rb:2:in `block in <top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
/Users/psmith/projects/clie/projectlion/config/routes.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `block in load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
/Users/psmith/projects/clie/projectlion/config/environment.rb:5:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `block in require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:379:in `block in run_tasks_blocks'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
LoadError: No such file to load -- /users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:307:in `depend_on'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:225:in `require_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:152:in `block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `map!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/metal/helpers.rb:93:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:111:in `helper'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/railties/helpers.rb:17:in `inherited'
/Users/psmith/projects/clie/projectlion/app/controllers/application_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/core_ext/string/inflections.rb:66:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise_controller.rb:2:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise/sessions_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:55:in `<module:Devise>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:6:in `<module:ActiveAdmin>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:5:in `<top (required)>'
/Users/psmith/projects/clie/projectlion/config/routes.rb:2:in `block in <top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
/Users/psmith/projects/clie/projectlion/config/routes.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `block in load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
/Users/psmith/projects/clie/projectlion/config/environment.rb:5:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `block in require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:379:in `block in run_tasks_blocks'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
我从昨天开始遇到了同样的问题，我刚刚解决了它。在我为 Xcode 6.3 安装命令行工具并恢复为 Xcode 6.2 的命令行工具解决了该问题后，我开始出现错误。您可以在此处下载以前版本的 DMG：https://developer.apple.com/downloads/index.action
Ruby 2.2.* 和 Xcode 6.3 命令行工具之间似乎存在某种冲突 - 希望它能尽快得到妥善修复！
我也有同样的问题。当我运行rake test。
正如本 中所建议的那样。
在 irb 或 pry 中试试这个：
pry(main)> File.expand_path('./')
你会得到这样的东西=> "/users/xxxx/Sites/xxxx"
然后在终端中运行 pwd 比较路径差异。
你会得到这样的东西 /users/xxxx/sites/xxxx。
如果是这种情况，您尝试的上述方法将起作用。它可能是 ruby 2.2.0 或 rails 核心问题，它弄乱了网站名称并将其大写。所以在区分大小写的 OS 中，比如 linux 或 mac，它不会找到路径。
但如果你不是这样的话，就像我一样。我建议您检查您使用的 ruby 的版本。我使用 ruby 2.2.0，然后切换 2.2.1。还有 rails 4.2.0.
然后我切换到ruby 2.1.5。 rails 版本保留。问题解决了。我的猜测是 ruby?..
有问题
我遇到了同样的挑战，在阅读了所有的答案后没有找到任何成功。这就是我修复错误的方法：
打开 Finder 并检查我的代码的路径。我的路径是 myMac/Code/my apps.
我将 Code 更改为 code 并修复了错误。
现在我的路径是myMac/code/my apps。
在我的例子中，我使用的是 windows。使用 Git shell，我在尝试从 Thoughtbot 安装 gem 管理时不断收到此错误。一直给我错误的命令 "AbstractController::Helpers::MissingHelperError" 是：
$ rails 生成 administrate:install
我没有像许多答案所建议的那样将我的文件夹重命名为小写。我改为使用 window 的命令。效果很好。
我刚刚从另一台计算机上克隆了我正在使用的存储库。当我尝试通过 运行 'rake db:migrate' 进行数据库迁移时，出现以下错误：
AbstractController::Helpers::MissingHelperError:
Missing helper file helpers//users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper.rb
我已经试过这里的最佳答案：
它说要在终端中执行以下操作：
cd ~
mv projects projects1
mv projects1 projects
我也试过：
sudo ln -s Users users
但这对我不起作用。我该怎么办？
更新：
这是我的堆栈跟踪：
ps-MacBook-Pro:projectlion psmith$ rake db:migrate
rake aborted!
AbstractController::Helpers::MissingHelperError: Missing helper file helpers//users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper.rb
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:154:in `rescue in block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:151:in `block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `map!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/metal/helpers.rb:93:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:111:in `helper'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/railties/helpers.rb:17:in `inherited'
/Users/psmith/projects/clie/projectlion/app/controllers/application_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/core_ext/string/inflections.rb:66:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise_controller.rb:2:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise/sessions_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:55:in `<module:Devise>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:6:in `<module:ActiveAdmin>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:5:in `<top (required)>'
/Users/psmith/projects/clie/projectlion/config/routes.rb:2:in `block in <top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
/Users/psmith/projects/clie/projectlion/config/routes.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `block in load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
/Users/psmith/projects/clie/projectlion/config/environment.rb:5:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `block in require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:379:in `block in run_tasks_blocks'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
LoadError: No such file to load -- /users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:307:in `depend_on'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:225:in `require_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:152:in `block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `map!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/metal/helpers.rb:93:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:111:in `helper'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/railties/helpers.rb:17:in `inherited'
/Users/psmith/projects/clie/projectlion/app/controllers/application_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/core_ext/string/inflections.rb:66:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise_controller.rb:2:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise/sessions_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:55:in `<module:Devise>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:6:in `<module:ActiveAdmin>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:5:in `<top (required)>'
/Users/psmith/projects/clie/projectlion/config/routes.rb:2:in `block in <top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
/Users/psmith/projects/clie/projectlion/config/routes.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `block in load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
/Users/psmith/projects/clie/projectlion/config/environment.rb:5:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `block in require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:379:in `block in run_tasks_blocks'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
我从昨天开始遇到了同样的问题，我刚刚解决了它。在我为 Xcode 6.3 安装命令行工具并恢复为 Xcode 6.2 的命令行工具解决了该问题后，我开始出现错误。您可以在此处下载以前版本的 DMG：https://developer.apple.com/downloads/index.action
Ruby 2.2.* 和 Xcode 6.3 命令行工具之间似乎存在某种冲突 - 希望它能尽快得到妥善修复！
我也有同样的问题。当我运行rake test。
正如本
pry(main)> File.expand_path('./')
你会得到这样的东西=> "/users/xxxx/Sites/xxxx"
然后在终端中运行 pwd 比较路径差异。
你会得到这样的东西 /users/xxxx/sites/xxxx。
如果是这种情况，您尝试的上述方法将起作用。它可能是 ruby 2.2.0 或 rails 核心问题，它弄乱了网站名称并将其大写。所以在区分大小写的 OS 中，比如 linux 或 mac，它不会找到路径。
但如果你不是这样的话，就像我一样。我建议您检查您使用的 ruby 的版本。我使用 ruby 2.2.0，然后切换 2.2.1。还有 rails 4.2.0.
然后我切换到ruby 2.1.5。 rails 版本保留。问题解决了。我的猜测是 ruby?..
我遇到了同样的挑战，在阅读了所有的答案后没有找到任何成功。这就是我修复错误的方法：
打开 Finder 并检查我的代码的路径。我的路径是 myMac/Code/my apps.
我将 Code 更改为 code 并修复了错误。
现在我的路径是myMac/code/my apps。
在我的例子中，我使用的是 windows。使用 Git shell，我在尝试从 Thoughtbot 安装 gem 管理时不断收到此错误。一直给我错误的命令 "AbstractController::Helpers::MissingHelperError" 是：
$ rails 生成 administrate:install
我没有像许多答案所建议的那样将我的文件夹重命名为小写。我改为使用 window 的命令。效果很好。