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', '5827033ee17117f5b77d43d4f5308523', '216.73.217.6', '1752991592', '1752991592', '/index.php/language/en/cat/c35_Laender.html/page/templates/css_dark_green/img/pixel_trans.gif')

[XT SQL Error]