Fatal error: Uncaught Error: Class "yii\base\Event" not found in /home/telefonai/public_html/test.telefonai.eu/templates/__MACOSX/vendor/verbb/cp-nav/src/events/ReorderLayoutsEvent.php:6 Stack trace: #0 {main} thrown in /home/telefonai/public_html/test.telefonai.eu/templates/__MACOSX/vendor/verbb/cp-nav/src/events/ReorderLayoutsEvent.php on line 6