Fatal error: Uncaught Error: Class 'Illuminate\Foundation\Testing\TestCase' not found in C:\Apache24\htdocs\vendor.old\brozot\laravel-fcm\tests\FCMTestCase.php:5 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old\brozot\laravel-fcm\tests\FCMTestCase.php on line 5