1366 - Incorrect integer value: '' for column `schablone_1`.`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', '70d74660c8b6cb813cbe44fa8b5b65b1', '100.28.132.102', '1718979085', '1718979085', '/shop/index.php')

[XT SQL Error]