Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\reservation\vendor\anlutro\l4-settings\tests\functional\AbstractFunctionalTest.php:8 Stack trace: #0 {main} thrown in C:\xampp\htdocs\reservation\vendor\anlutro\l4-settings\tests\functional\AbstractFunctionalTest.php on line 8