Widget Display Error

After the latest update, the review widget, inserted into a WordPress site via a shortcode, is no longer visible. Can you tell me why? When examining the page, the console gives this error:

Access to fetch at ‘https://cdn.trustindex.io/widgets/82/82b86bd4937c86316c066ff9eb1/content.html’ from origin ‘https://blueheeler.it’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.