Can't rollback laravel migrate - php

Question

I've created a migration for CreateUserTable successfully.
<?php
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateUserTable extends Migration {
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('user', function(Blueprint $table)
{
$table->increments('id');
$table->string('email')->unique;
$table->string('password', 60);
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::drop('user');
}
}
but I'm not able to rollback:
$ php artisan migrate:rollback
{"error":{"type":"Symfony\\Component\\Debug\\Exception\\FatalErrorException","message":"Class 'CreateUserTable' not found","file":"C:\\xampp\\htdocs\\laravel\\vendor\\laravel\\framework\\src\\Illuminate\\Database\\Migrations\\Migrator.php","line":301}}
Someone suggested to run below but it give me an other error:
$ composer dump-autoload
Composer could not find the config file: C:\ProgramData\ComposerSetup\bin
To initialize a project, please create a composer.json file as described in the http://getcomposer.org/ "Getting Started" section
Any solution to rollback and avoid this second error related to composer.json? I'[m using Laravel 4 with fresh installation.

Answer 1

Rollback often requires you to run composer dumpautoload first. I've had the same problems in Laravel 5.1.
In your case dumpautoload should be in one word - this way it works for me.
And of course composer should be run in a folder that contains the composer.json file. This would be your Laravel project folder.