You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'AND `active` = 1 AND `level` = 0 AND `IDMenusSection` = (SELECT `I...' at line 4
SELECT * FROM `menus` WHERE `master` = 0 AND `IDLang` = 1/ AND `active` = 1 AND `level` = 0 AND `IDMenusSection` = (SELECT `IDMenusSection` FROM `menussection` WHERE `IDMenusSection` = "1") ORDER BY `priority` DESC;