1366 - Incorrect integer value: '' for column `dbp4mljw`.`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', '00989fab317a680d3da6dac9ae2ac8e6aeb2f4b9', '35.172.216.157', '1585457743', '1585457743', '/edition/checkout_shipping.php')

[XT SQL Error]