[SQL QUERY FAILED] on /app/lop/save_lop.php at line 4658: 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 ' `number_of_trolleys` = , `product_supervisor` = '', `quality_control` = ''  ...' at line 1<br>[SQL QUERY]: UPDATE `lop_jobcard` SET `product_no` = '', `batch_no` = '', `date_jobcard_opened` = '',`jobcard_date_closed` = '', `checked_by_quality_control` = '', `checked_by_production` = '', `room_no` = '', `mass_on_trolley` = , `number_of_trolleys` = , `product_supervisor` = '', `quality_control` = ''    WHERE `record_id` =