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', '1f4a55608cb752b0cd3109f71fd2eb2e', '216.73.216.65', '1752613396', '1752613396', '/product_info.php/language/de/info/p2846_Satellitenbild-Poster-Konfigurator.html')

[XT SQL Error]