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', '85e0d227cf45968cc58d5e84d2c615f3', '44.208.25.215', '1711691630', '1711691630', '/product_info.php?language=de&info=p247_Nessun-Dorma.html&XTCsid=12ab6c593489deceb1c19806497af77d')

[XT SQL Error]