$request can not be null'
Hi, I ran composer update on ratchet server and now when I run the server and try to log open chat connection with javascript (Firefox and Chrome) I get error: 

PHP Fatal error:  Uncaught exception 'UnexpectedValueException' with message '$request can not be null' in /home/chatserver1/vendor/cboden/ratchet/src/Ratchet/WebSocket/WsServer.php:76

I also created a new server to a different folder with composer.json from ratchetphp but still the issue remains. 

https://groups.google.com/forum/#!topic/ratchet-php/9UfdyYulRm0
I only find this on the issue but that does not help me.

Advices are highly appreciated!
