为什么 php artisan migrate 失败:未定义的方法?

Why php artisan migrate fails: undefined method?

看这张图:https://postimg.org/image/4fvu34juz/

当我运行 php artisan迁移时,有显示:

[symfony\component\debug\exception\fatalthrowableerror]
call to undefined method illuminate\database\schema\blueprint::textarea<>

有什么办法可以解决我的问题吗?

更新:

代码:

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateFlightTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        //
        Schema::create('flights', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('airline');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        //
        Schema::drop('flights');
    }
}

表示classBlueprint中没有名为textarea()的函数。删除调用它的代码。