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', 'bcqbv9cehdb8o2iibedtfjqpg1', '18.117.102.123', '1739000907', '1739000907', '/index.php?XTCsid=u26kusssenv9nf8n7cr2rtvfn3&cat=c1246_Werkzeug.html')

[XT SQL Error]