1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', 'h82lb8irirga22biv2tcphure3', '3.140.195.190', '1746975146', '1746975146', '/index.php/manu/m18_KNS-LIGHT-Schilder.html')

[XT SQL Error]