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', '0385553dd3e940708d1f783ce3f33383', '216.73.216.35', '1751520219', '1751520219', '/index.php/language/de/cat/c35_Laender.html/page/3')

[XT SQL Error]