What does 'TypeError: Cannot read property '_locals' of undefined' mean?

Question

我在 teamTreeHouse 上做这个教程 https://teamtreehouse.com/library/express-basics/using-templates-with-express/using-jade-in-your-express-app

我收到了这个错误：

TypeError: Cannot read property '_locals' of undefined
   at EventEmitter.render (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\application.js:548:11)
   at c:\Users\bcarr\Web Projects\LTQ\app.js:12:9
   at Layer.handle [as handle_request] (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\layer.js:95:5)
   at next (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\route.js:131:13)
   at Route.dispatch (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\route.js:112:3)
   at Layer.handle [as handle_request] (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\layer.js:95:5)
   at c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\index.js:277:22
   at Function.process_params (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\index.js:330:12)
   at next (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\router\index.js:271:10)
   at expressInit (c:\Users\bcarr\Web Projects\LTQ\node_modules\express\lib\middleware\init.js:33:5)

现在，根据我从该域中读取的信息，我没有名为 _locals 的文件夹。

app.set('view engine', 'jade');
app.set('views', './templates');

我正在使用这些代码行来启动它。我正在使用

app.set('views', __dirname + './templates');

但是我的 app.js 与我的模板文件夹 "LTQ"

在同一个文件夹中

为什么我会收到这个错误？这是什么意思？

Answer 1

你能不能省略点，看看会发生什么。我是说这个

app.set('views', __dirname + '/templates');

What does 'TypeError: Cannot read property '_locals' of undefined' mean?

What does 'TypeError: Cannot read property '_locals' of undefined' mean?

javascript

node.js

pug