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', 'b2b19f1ada894f529261533159b53e7d', '44.215.110.142', '1711670945', '1711670945', '/index.php/language/de/cat/c30_Laender.html')

[XT SQL Error]