1366 - Incorrect integer value: '' for column `CP_as15`.`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', 'sj9qb0q1l3200jkn6dnvn97mr3', '18.118.10.213', '1738993441', '1738993441', '/index.php?XTCsid=e08p0achgq0tssilr9o0o9bta6&cat=c586_Ladeger--t-f--r-Modellbau-Akkus.html')

[XT SQL Error]