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Co-authored-by: David Siegfried <david.siegfried@uni-vechta.de>

app/controllers/resources/resource.php

@@ -27,7 +27,7 @@ class Resources_ResourceController extends AuthenticatedController
 
         $this->edit_global_permissions = false;
 
-        $this->resource_id_parameter = count($args) > 0 ? $args[0] : null;
+        $this->resource_id_parameter = $args[0] ?? null;
 
         $this->resources = [];
         $this->resource_ids = [];