Fatal error: Uncaught Error: Class "Ratchet\AbstractMessageComponentTestCase" not found in /var/www/html/mun/vendor/cboden/ratchet/tests/unit/Http/OriginCheckTest.php:8 Stack trace: #0 {main} thrown in /var/www/html/mun/vendor/cboden/ratchet/tests/unit/Http/OriginCheckTest.php on line 8