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', 'qnspqa0ta8p04sg4up0niv6eq2', '18.218.250.235', '1738999768', '1738999768', '/index.php?XTCsid=3d3p3k0ohp8dmvm3fuo7su5ts5&cat=c1246_Werkzeug.html')

[XT SQL Error]