1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '2ee2ca2507d4181d41f3ab1a336e0d30', '3.14.141.228', '1714174987', '1714174987', '/index.php/language/de/cat/c40_Karten-Konfigurator.html')

[XT SQL Error]