Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/creantis/public_html/api.creantis.dev/vendor/textalk/websocket/tests/ClientTest.php:17 Stack trace: #0 {main} thrown in /home/creantis/public_html/api.creantis.dev/vendor/textalk/websocket/tests/ClientTest.php on line 17