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', 'af5e30c407e4f7633ca2655508599c20', '3.133.12.172', '1714136575', '1714136575', '/product_info.php?info=p324_Jericho---Lippenhantel.html&XTCsid=f716959fd807bba9b6e004501137d276')

[XT SQL Error]