Hi @nikhil.s
It looks like the file got somehow corrupted…
Could you let us know the steps you took that resulted in this?
As far as recovering it, it looks like it was damaged permanently. If you published your process in the past though and then run it, the project would be unpackaged in here:
%userprofile%\.nuget\packages
This could potentially allow you to recover the file.
Still, it would be good to know what happened here. All the details of your environment are highly appreciated.
You can use the UiPath Diagnostic Tool for that: