'.$link_content.''; return $out; } ?>1366 - Incorrect integer value: '' for column `rubikmazeshop`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'a32649341846303857bd7ebb358f61f2', '18.97.14.88', '1737740202', '1737740202', '/rubikmazeshop/')

[XT SQL Error]