Fatal error: Uncaught Error: Class "Adldap\Laravel\Tests\DatabaseTestCase" not found in D:\Apache24\www\sanqi\back-end\vendor\adldap2\adldap2-laravel\tests\DatabaseProviderTest.php:21 Stack trace: #0 {main} thrown in D:\Apache24\www\sanqi\back-end\vendor\adldap2\adldap2-laravel\tests\DatabaseProviderTest.php on line 21