1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', 'e8he8afu8ciab0af5qi8bk7ut0', '216.73.216.45', '1758163860', '1758163860', '/index.php?cPath=5145')

[XT SQL Error]