Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/mun/vendor/ratchet/rfc6455/tests/unit/Handshake/RequestVerifierTest.php:11
Stack trace:
#0 {main}
thrown in /var/www/html/mun/vendor/ratchet/rfc6455/tests/unit/Handshake/RequestVerifierTest.php on line 11