@vatsal I did a little reading...you might be out of luck. https://github.com/node-inspector/node-inspector/issues/126
Having said that, looks like some people were able to achieve working configurations, so read through the issues page above. You might need to uninstall your current node-inspector and do:
sudo npm install -g firstname.lastname@example.org
But it looks like that might also bring it's own set of problems. At the bottom, one of the maintainers links to another issue which is a year old, so it's probably not going to be fixed anytime soon.
He also mentions this debugger might be worth trying: https://www.npmjs.org/package/bugger