1366 - Incorrect integer value: '' for column `DBchUcr8hevu`.`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', 'q5cm9vul2kv518787npodp31s2', '216.73.216.131', '1771248533', '1771248533', '/shop/shop_content.php/coID/3/content/Unsere-AGB-s/XTCsid/d1d2aa95be8351c1c0e06c2e65cdc6ac')

[XT SQL Error]