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', 'd0ea950f23f9208b1c6b1f90245d16a0', '3.142.251.223', '1713597642', '1713597642', '/index.php/language/de/cat/c37_World.html')

[XT SQL Error]