Class 'MyApp\Chat' not found
Hi, this is seems like regular problem but still lack of solutions. tried lot to solve but couldn't with any solution. this will help lot of people who is trying to use ratchet.

using - ratchet hello world example (exact same source code on web) 

this example works in windows perfectly. but in google cloud platform Ubuntu 16.4 gave this error.

error message is -
PHP Fatal error:  Uncaught Error: Class 'MyApp\Chat' not found in /home/wpman/ws/bin/server.php:12
Stack trace:
#0 {main}
  thrown in /home/wpman/ws/bin/server.php on line 12

project directory
~/ws/bin/server.php
~/ws/src/chat.php
~/ws/vendor/
~/ws/composer.json
~/ws/composer.lock
~/ws/composer.phar


