1366 - Incorrect integer value: '' for column `hundgesund`.`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', '64fa0baa0c164ab8c61fe18fe7ba85a6', '3.233.221.149', '1582239272', '1582239272', '/shop/account.php')

[XT SQL Error]