Fatal error: Uncaught Error: Interface "OCP\EventDispatcher\IEventListener" not found in /home/tzuovhm/tzuovhm/apps_/text/lib/Listeners/BeforeNodeWrittenListener.php:23 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/apps_/text/lib/Listeners/BeforeNodeWrittenListener.php on line 23