PermissionAlreadyExists on running tests with RefreshDatabase

Hello,

I would like to perform a test with RefreshDatabase; if I do so, I am getting this error:

 A `index dashboard` permission already exists for guard `web`.

  at vendor/spatie/laravel-permission/src/Exceptions/PermissionAlreadyExists.php:11
      7▕ class PermissionAlreadyExists extends InvalidArgumentException
      8▕ {
      9▕     public static function create(string $permissionName, string $guardName)
     10▕     {
  ➜  11▕         return new static("A `{$permissionName}` permission already exists for guard `{$guardName}`.");
     12▕     }
     13▕ }
     14▕ 

      +1 vendor frames 
  2   database/seeders/RolesAndPermissionsSeeder.php:22
      Spatie\Permission\Models\Permission::create()

      +7 vendor frames 
  10  database/seeders/DatabaseSeeder.php:16
      Illuminate\Database\Seeder::call()

This is the TestCase.php

<?php

namespace Tests;

use App\Models\User;
use Illuminate\Foundation\Testing\TestCase as BaseTestCase;
use Illuminate\Support\Facades\Artisan;

/**
 * Class TestCase
 *
 * @package Tests
 */
abstract class TestCase extends BaseTestCase
{
    use CreatesApplication;

    /**
     * @var
     */
    protected $admin;

    /**
     * @var
     */
    protected $user_one;

    /**
     * @var
     */
    protected $user_two;

    /**
     * @var
     */
    protected $user_admin;

    /**
     * Set up the tests
     */
    public function setUp(): void
    {
        parent::setUp();
        Artisan::call('migrate', ['-vvv' => true]);
        Artisan::call('passport:install', ['-vvv' => true, '--uuids' => true, '--no-interaction' => true]);
        $this->seed();
        $this->user_admin = User::where('email', '[email protected]')->first();
    }
}

This is the failing test:

<?php

namespace Tests\Feature;

use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

/**
 *
 */
class PrivacyTest extends TestCase
{
    use RefreshDatabase;

    /**
     * @var bool
     */
    public $mockConsoleOutput = false;

    /**
     * Test if the user can log in via HTTP API.
     *
     * @return void
     */
    public function test_user_can_view_own_user_data()
    {
        $user = $this->user_one;

        $this->json('GET', "/api/user/{$user->id}")->assertStatus(200)
             ->assertJsonStructure([
                 'token_type',
                 'expires_at',
                 'access_token',
             ]);
    }
}

This is the DatabaseSeeder.php

<?php

namespace Database\Seeders;

use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
    /**
     * Seed the application's database.
     *
     * @return void
     */
    public function run()
    {
        $this->call(RolesAndPermissionsSeeder::class);
        $this->call(UsersSeeder::class);
        $this->call(CompanySeeder::class);
    }
}

And this is the RolesAndPermissionsSeeder.php

<?php

namespace Database\Seeders;

use Illuminate\Database\Seeder;
use Spatie\Permission\Models\Permission;
use Spatie\Permission\Models\Role;
use Spatie\Permission\PermissionRegistrar;

class RolesAndPermissionsSeeder extends Seeder
{
    public function run()
    {
        /*reset cached roles and permissions*/
        app(PermissionRegistrar::class)->forgetCachedPermissions();

        /*Create permissions*/

        /*Dashboard*/
        Permission::create(['name' => 'index dashboard']);

        /*Add admin role*/
        $admin = Role::create(['name' => 'admin']);

        /*Dashboard*/
        $admin->givePermissionTo('index dashboard');
    }
}