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', '1f2f804eecfd2700f3f31e677b25179f', '216.73.216.115', '1761697369', '1761697369', '/index.php/language/de/cat/c35_Countries.html/page/3')

[XT SQL Error]