1366 - Incorrect integer value: '' for column `db162720`.`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', 't9t1dk1a8e9p47i8gktr65b062', '3.15.6.77', '1713920650', '1713920650', '/index.php/cat/c22_.html')

[XT SQL Error]