1366 - Incorrect integer value: '' for column `pella-ware`.`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', '5bc31bd72d7d0b34accd93992e5c82ec', '216.73.217.104', '1784742623', '1784742623', '/')

[XT SQL Error]