1366 - Incorrect integer value: '' for column `dogsdream`.`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', '701ad2f5b00950d690eb1c94e22cbadb', '216.73.216.162', '1755326164', '1755326164', '/shop/product_info.php/info/p20_DogsDream-Querbeet.html')

[XT SQL Error]