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', '5b18beb1c6fc0a8f59379195e65c0039', '216.73.216.30', '1764074688', '1764074688', '/index.php/language/en/cat/c35_Laender.html/page/1')

[XT SQL Error]