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', 'g6dgpbebioq0ktiqlkm50203l3', '3.141.27.108', '1738999010', '1738999010', '/index.php?XTCsid=mkl8qqqorbnshicuaf45rnrdo2&cat=c509_Fahrrad---E-Bike-Akkus.html')

[XT SQL Error]