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', '5c9ca571c2bfc9f169fe0a0988669005', '3.15.147.215', '1713471021', '1713471021', '/index.php/language/de/cat/c42_Vektorkarten.html')

[XT SQL Error]