我有一个错误。当我运行php artisan db:seed --class=PermissionTableSeeder时
出现此错误
系统提示：“您访问的页面不存在”

<?php

namespace Database\Seeders;

use Illuminate\Database\Seeder;
use Spatie\Permission\Models\Permission;
// 

// 

class PermissionTableSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $permissions = [
            'role-list',
            'role-create',
            'role-edit',
            'role-delete',
        ];

        foreach ($permissions as $permission) {
            Permission::create(['name' => $permission]);
        }
    }
}