1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', '9juebe7dq9tf84hf1g3su9g7f4', '216.73.216.53', '1751741878', '1751741878', '/product_info.php/info/p6442_Textschild--Achtung--Video--berwachung.html')

[XT SQL Error]