1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'd6ba6d0dca4e7e640e8a451a1c5f24ba', '3.235.65.220', '1664487758', '1664487758', '/shop_content.php/coID/3/content/Unsere-AGB-s')

[XT SQL Error]