Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\Apache24_x64\htdocs\__cms\vendor\symfony\event-dispatcher\Tests\ImmutableEventDispatcherTest.php:22 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\__cms\vendor\symfony\event-dispatcher\Tests\ImmutableEventDispatcherTest.php on line 22