1366 - Incorrect integer value: '' for column `db162720`.`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', 'ifovgt747irndic39tah94pbv1', '44.197.251.102', '1710836059', '1710836059', '/shop_content.php/coID/4/content/Impressum')

[XT SQL Error]