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', '6617601ebd61e8628be35c4ae57f5394', '18.204.56.185', '1659978523', '1659978523', '/index.php/cat/c34_Continents.html')

[XT SQL Error]