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', '4d7021a325d71e966d3bc898500a9504', '216.73.216.8', '1757925063', '1757925063', '/index.php/language/de/cat/c6_Satellite-Image-Poster.html')

[XT SQL Error]