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', 'ediqlpta0epfot7fpghpnqha76', '18.216.232.215', '1738993737', '1738993737', '/index.php?XTCsid=mgdqk1fhm8rf8rhaciivk3tpt2&cat=c815_PSC.html')

[XT SQL Error]