Fatal error: Uncaught Error: Class "Ratchet\AbstractConnectionDecorator" not found in /users/energydata/www/volkszaehler.org/vendor/cboden/ratchet/src/Ratchet/Wamp/WampConnection.php:12 Stack trace: #0 {main} thrown in /users/energydata/www/volkszaehler.org/vendor/cboden/ratchet/src/Ratchet/Wamp/WampConnection.php on line 12