Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/amper418/shopv2.amperio.ch/vendor/shopware/core/Migration/Test/Migration1620820321AddDefaultDomainForHeadlessSaleschannelTest.php:23 Stack trace: #0 {main} thrown in /home/amper418/shopv2.amperio.ch/vendor/shopware/core/Migration/Test/Migration1620820321AddDefaultDomainForHeadlessSaleschannelTest.php on line 23