fix menu

Author: mambax7

admin/menu.php

@@ -91,7 +91,7 @@
     'icon'  => $pathIcon32 . 'mail_foward.png',
 ];
 
-if ($helper->getConfig('displayDeveloperTools')) {
+if (is_object($helper->getModule()) && $helper->getConfig('displayDeveloperTools')) {
     $adminmenu[] = [
         'title' => constant('CO_' . $moduleDirNameUpper . '_' . 'ADMENU_MIGRATE'),
         'link'  => 'admin/migrate.php',