错误迁移：无法声明类 X，因为该名称已在使用中

我不知道为什么在执行迁移时会发生此错误，因为我没有重复的类。

迁移：

2014_10_12_100000_create_password_resets_table.php
2019_01_18_020910_create_roles_table.php
2019_01_18_025535_create_members_table.php
2019_01_18_025536_create_users_table.php
2019_01_18_183649_create_projects_table.php
2019_01_18_184249_create_member_project_table.php
2019_01_18_184719_create_sprints_table.php
2019_01_18_185218_create_tasks_table.php
2019_01_21_033045_add_shortname_to_project.php

错误：

PHP Fatal error:  Cannot declare class CreateRolesTable, because the name is already in use in
oyectos\database\migrations\2019_01_18_020910_create_roles_table.php on line 33

In 2019_01_18_020910_create_roles_table.php line 33:

  Cannot declare class CreateRolesTable, because the name is already in use

类：

class CreateRolesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('roles', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name',128)->unique();
            $table->string('description');
            $table->boolean('system');
        });
    }

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