1366 - Incorrect integer value: '' for column `hbl_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', 'f15as0jcu9c6j4ougn59260hg0', '216.73.216.175', '1761792303', '1761792303', '/product_info.php?info=p105_Gaer--und-Einlegetopf.html')

[XT SQL Error]