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', '43b8b9d17ff42d1acdd1e5c2c1bf71cf', '216.73.216.116', '1752278080', '1752278080', '/index.php/language/de/cat/c32_Welt.html')

[XT SQL Error]