1366 - Incorrect integer value: '' for column `creatihu_shop`.`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', '4fdacc4f642d90cb777a3b9711864a68', '18.97.9.173', '1762977532', '1762977532', '/')

[XT SQL Error]