FIX: fix template path registrator

app/Http/Middleware/AdminMenuRegistrator.php

@@ -33,6 +33,9 @@ class AdminMenuRegistrator
 
         // iterate over all enabled modules
         foreach ($modules as $key => $module) {
+            if (!is_callable([$module->handler, 'registerAdminMenu']))
+                continue;
+
             // try to register menus
             try {
                 call_user_func([$module->handler, 'registerAdminMenu'], $user);