1366 - Incorrect integer value: '' for column `cosmeti`.`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', 'f8fe0891606372c163f20d86c824b887', '18.191.26.53', '1715597600', '1715597600', '/xtcommerce/password_double_opt.php')

[XT SQL Error]