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', '89bb3c251e966b5725f085f7318e9971', '216.73.216.53', '1752099660', '1752099660', '/product_info.php/language/de/info/p1550_Chad-Satellite-Image.html')

[XT SQL Error]