1366 - Incorrect integer value: '' for column `ngtkeZ_web1104_2`.`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', 'bkjk9k8pkm5pdfdr86tp99jpi2', '44.192.22.242', '1628163014', '1628163014', '/index.php')

[XT SQL Error]