Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/symfony/translation-contracts/Test/TranslatorTest.php:33 Stack trace: #0 {main} thrown in /home/wwwarms/ws.arms-tools.com/websocket-server/vendor/symfony/translation-contracts/Test/TranslatorTest.php on line 33