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', '7d3da16b3fb1e72acf10117bff579ddd', '216.73.216.8', '1757997905', '1757997905', '/index.php/language/en/cat/c40_Karten-Konfigurator.html')

[XT SQL Error]