1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'adbfeba83a604cc7f49effc494a3d6f2', '18.226.169.94', '1713583145', '1713583145', '/create_account.php?language=de')

[XT SQL Error]