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', '6m9b5b3rmf021bpvmdti00e224', '216.73.216.58', '1764137164', '1764137164', '/product_info.php/info/p7054_Textschild--Rauchschutztuer-verkeilen--verstellen--festbinden----.html')

[XT SQL Error]