Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\hoteline\vendor\symfony\http-kernel\Tests\Fragment\FragmentHandlerTest.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\hoteline\vendor\symfony\http-kernel\Tests\Fragment\FragmentHandlerTest.php on line 22