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', '106d5781048acd61be442991eaf00d08', '107.23.85.179', '1710848821', '1710848821', '/index.php/cat/c35_Countries.html')

[XT SQL Error]