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', 'bdb4622ca3a4cb786b2fe0238d0d2a14', '216.73.216.198', '1752879260', '1752879260', '/index.php/language/de/cat/c37_Welt.html')

[XT SQL Error]