1366 - Incorrect integer value: '' for column `creatihu_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', '88594a55904af8fc2fad44e4463b0fd4', '18.217.6.114', '1715206864', '1715206864', '/shop_content.php?coID=0')

[XT SQL Error]