Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\dpbb\vendor\doctrine\deprecations\tests\Doctrine\Deprecations\DeprecationTest.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\dpbb\vendor\doctrine\deprecations\tests\Doctrine\Deprecations\DeprecationTest.php on line 21