fix param

htdocs/modulebuilder/template/scripts/mymodule.php

@@ -102,7 +102,7 @@ $langs->load("main"); // To load language file for default language
 // Load user and its permissions
 $result = $user->fetch('', 'admin'); // Load user for login 'admin'. Comment line to run as anonymous user.
 if (!($result > 0)) {
-	dol_print_error('', $user->error);
+	dol_print_error(null, $user->error);
 	exit;
 }
 $user->getrights();