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', '6fb12d197c18b5463b1ff40deee3a0fd', '216.73.216.8', '1758006573', '1758006573', '/index.php/language/de/cat/c42_Vektorkarten.html')

[XT SQL Error]