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', '4524e55129c48d9b6c0e7785bf04e070', '216.73.216.116', '1752309794', '1752309794', '/index.php/language/de/cat/c44_3D-Karten.html')

[XT SQL Error]