1366 - Incorrect integer value: '' for column `db110607`.`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', 'jv5c1om2onishabm1sins21va5', '3.238.104.143', '1657033324', '1657033324', '/advanced_search_result.php?keywords=Metallbett+160+x+200&categories_id=47&inc_subcat=1&manufacturers_id=&pfrom=&pto=&x=39&y=4')

[XT SQL Error]