1366 - Incorrect integer value: '' for column `sql12320`.`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', 'e2fb0daf5a53dd7c3edb07d877ba4567', '3.83.188.254', '1585986004', '1585986004', '/shop/product_info.php/info/p132_Fueckel--180-s-Bienenbrot.html')

[XT SQL Error]