Fatal error: Uncaught Error: Interface "Evenement\EventEmitterInterface" not found in /users/energydata/www/volkszaehler.org/vendor/react/socket/src/ServerInterface.php:49 Stack trace: #0 {main} thrown in /users/energydata/www/volkszaehler.org/vendor/react/socket/src/ServerInterface.php on line 49