1366 - Incorrect integer value: '' for column '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', 'm22ihe29t315ula85qfbvanam0', '216.73.216.87', '1765735288', '1765735288', '/shop_content.php?XTCsid=3547ee950f9337e348e5e07def1466f0&coID=4')

[XT SQL Error]