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', 'bf3f482a25295b0c59aa0d04d8962e3453608245', '35.172.216.157', '1585462191', '1585462191', '/edition/index.php')

[XT SQL Error]