Fatal error: Uncaught Error: Class 'Illuminate\Foundation\Testing\TestCase' not found in C:\xampp\htdocs\enercard\vendor\dwij\laraadmin\src\Installs\tests\TestCase5.3.php:3 Stack trace: #0 {main} thrown in C:\xampp\htdocs\enercard\vendor\dwij\laraadmin\src\Installs\tests\TestCase5.3.php on line 3