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', '19f8014aa20f13fe32e550a6b237a01b', '13.59.236.219', '1713521066', '1713521066', '/product_info.php?info=p320_Easy-Tunes--F-Instruments-.html&XTCsid=fbf10991e93a5b1cee6d3cdc21485899')

[XT SQL Error]