Error [Sitefinity Nuget] Unable to load the service index for source [Progress Sitefinity]

Question

I have added the http://nuget.sitefinity.com/nuget in the Package Source Manager of Visual Studio 2022, according to the documentation here: SiteFinity Documentation, but it's not getting the package info from the server.

Error
[Sitefinity Nuget] Unable to load the service index for source http://nuget.sitefinity.com/nuget.
The content at 'http://nuget.sitefinity.com/nuget' is not a valid JSON object.
Unexpected character encountered while parsing value: <. Path '', line 0, position 0.

Answer 1

Use the https version of the feed: https://nuget.sitefinity.com/nuget/