1366 - Incorrect integer value: '' for column `sql12320`.`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', 'c1f26f85047a60e97aeefd59ac524d31', '3.83.188.254', '1585986148', '1585986148', '/shop/ifshop_content.php/coID/3/content/Unsere-AGB-s')

[XT SQL Error]