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', 'd2767e66a568a46253147275a13a9d0f', '3.129.247.196', '1713582715', '1713582715', '/shop_content.php/coID/7/content/Kontakt')

[XT SQL Error]