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', 'efc320cb521b1801eed20bbe4fe9fb7b', '3.90.242.249', '1711616624', '1711616624', '/product_info.php/language/en/info/p3145_United-Kingdom-Relief-Map.html')

[XT SQL Error]