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', '1f2d9e67a379c15736d7b399ab326a4a', '18.221.187.121', '1713937184', '1713937184', '/product_info.php?info=p321_Easy-Tunes--Rhythmus-Leadsheets-.html&XTCsid=12ab6c593489deceb1c19806497af77d')

[XT SQL Error]