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', '90e31be18f71f58427654119d678addd', '216.73.216.198', '1752880773', '1752880773', '/shop_content.php/coID/3')

[XT SQL Error]