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', '923fbfbc39799789e291fb798d85aaab', '216.73.216.251', '1752525619', '1752525619', '/index.php/language/de/cat/c33_Satellitenbilder-Digital.html')

[XT SQL Error]