1366 - Incorrect integer value: '' for column `shop_db3`.`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', '1a974b2a7f6c478b967faf03153cf240', '3.145.2.184', '1714084670', '1714084670', '/product_info.php?info=p41_Schoener-Abend--Polka-.html&XTCsid=26fedc8b3cbf5330d12a051fef4e732f')

[XT SQL Error]