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', '44cq8mfrjpkddnj0mvkjdc7ea6', '35.175.120.174', '1574261340', '1574261340', '/')

[XT SQL Error]