1366 - Incorrect integer value: '' for column `CP_as15`.`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', 'i5jjqm1jkcl59a7fudpuudnre3', '3.149.242.75', '1739000916', '1739000916', '/index.php?XTCsid=u26kusssenv9nf8n7cr2rtvfn3&cat=c527_Digital-Kamera-Zubeh--r.html')

[XT SQL Error]