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', '3279183bdcd3b2d9e87a6bfc251cab3a', '216.73.216.198', '1752883321', '1752883321', '/shop_content.php/language/en/coID/2/content/Privatsphaere-und-Datenschutz')

[XT SQL Error]