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', 'f42059e06d28be9beea22fa8044b0a66', '216.73.216.162', '1755326359', '1755326359', '/shop/product_info.php/info/p10_BIO---Moehrenkuchen-Grosspackung.html')

[XT SQL Error]