Fatal error: Uncaught Error: Class "Ratchet\Wamp\Exception" not found in /var/www/html/mun/vendor/cboden/ratchet/src/Ratchet/Wamp/JsonException.php:4 Stack trace: #0 {main} thrown in /var/www/html/mun/vendor/cboden/ratchet/src/Ratchet/Wamp/JsonException.php on line 4