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', '3jpi5oo3a278gal9k7prukhq06', '3.145.191.235', '1738997906', '1738997906', '/index.php?XTCsid=rvhpma4g2refpn33qk2f07nfb7&cat=c722_Funk-Kopfh--rer-Akku.html')

[XT SQL Error]