Remove possible slashes from slug when modifying for events

extensions/t3org_layout/Classes/Hook/DataHandlerHook.php

@@ -107,7 +107,7 @@ class DataHandlerHook
     {
         $slug = $params['slug'];
         if ($params['record']['startdate']) {
-            $slug = date('Ymd', strtotime($params['record']['startdate'])) . '-' . $params['record']['title'];
+            $slug = date('Ymd', strtotime($params['record']['startdate'])) . '-' . str_replace('/', '-', $params['record']['title']);
         }
 
         return $slug;