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', '361d9137da9a3be626a55c698094cc48', '3.145.64.241', '1713556948', '1713556948', '/index.php/language/en/cat/c43_Elevation-Maps.html')

[XT SQL Error]