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', 'a9835e829ab2c431a9cf1317f1c01ed1', '34.239.185.22', '1711710317', '1711710317', '/shop_content.php/coID/3')

[XT SQL Error]