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', '604ced16fa223e966ad2dba9190c809e', '18.227.0.192', '1714039114', '1714039114', '/index.php/language/en/cat/c29_Kontinente.html')

[XT SQL Error]