Error launching up the OpenBullet

How to fix?

A fatal error occurred. The required library hostfxr.dll could not be found.
If this is a self-contained application, that library should exist in [C:\Users\premi\Downloads\OpenBullet2\].
If this is a framework-dependent application, install the runtime in the global location [C:\Program Files\dotnet]

If you’re double clicking the exe, you’re probably missing the asp.net core runtime. Install it. Look at the installation guide on this forum.