Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\01_Projekte\liga_24\phpseclib\vendor\squizlabs\php_codesniffer\tests\Core\AbstractMethodUnitTest.php:17 Stack trace: #0 {main} thrown in C:\01_Projekte\liga_24\phpseclib\vendor\squizlabs\php_codesniffer\tests\Core\AbstractMethodUnitTest.php on line 17