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', 'itd16tar0jvr4afikmc9lmm2l3', '18.219.94.100', '1738998634', '1738998634', '/index.php?XTCsid=rvhpma4g2refpn33qk2f07nfb7&cat=c803_RAID-Controller-Akku.html')

[XT SQL Error]