#4323 Error when saving email template

studio/polyglot.php

@@ -10,6 +10,7 @@
 
 require_once('./../inc/header.inc.php');
 require_once(BX_DIRECTORY_PATH_INC . 'design.inc.php');
+require_once(BX_DOL_DIR_STUDIO_INC . 'utils.inc.php');
 
 bx_import('BxDolLanguages');