1366 - Incorrect integer value: '' for column `shop_db3`.`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', 'b93fa670ad9c18168bc5919e71e2910d', '44.200.32.31', '1711711203', '1711711203', '/shopping_cart.php?XTCsid=0b5950426fd4d33665c5302b513a92c8')

[XT SQL Error]