CORS policy: No 'Access-Control-Allow-Origin'

[anketaube]

Hi,
I tried to open https://ebook-test-manifests.netlify.app/collection/cc-shared-culture/index.json with https://uv-ebooks-example.netlify.app/# because I want to show an epub-example in the Universalviewer.

Unfortunately the epub doesn't show up and continues to show the loading icon.
In the console of my browser I get this message:
Access to fetch at 'https://ebook-test-manifests.netlify.com/collection/cc-shared-culture/index.json' from origin 'https://uv-ebooks-example.netlify.app' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

It would be great to get a fix rather soon because I will present different formats in the Unisversalviewer next week.

Thank you very much in advance your help is greatly appreciated!
Anke