Putty showing error while runing wv (waveform viewer)

When trying to run wv (waveform viwer) - getting below error

Error message:

Putty X11 proxy: unable to connetc to forwarded X server: Network error: Connection refused.

Reason: Whenever any such error comes where keyword such as  "X11 forwading", "display localhost" or "X11 proxy" present, we should check if X11 forwarding is enabled in putty and Xming is runing in background. 

Solution: Above error is because of Xming is not runing in background. Please run it and it will fix the issue.

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