1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', 'e41d6a50b8eb51c920213de05c0e6486', '3.147.237.231', '1730196279', '1730196279', '/index.php?refID=1')

[XT SQL Error]