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', 'cf7007a8ec6368d28b7eeabaf86bef7d', '216.73.216.162', '1755325882', '1755325882', '/shop/product_info.php/info/p8_BIO---Apfel---Honig-Gro-packung.html')

[XT SQL Error]