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', '93a59cb3b4ba9c7cae5af5a57114c5ec', '3.236.138.35', '1674862911', '1674862911', '/index.php?refID=1')

[XT SQL Error]