Npm version mismatch error while setting up developer mode.

[Sai Birada]

I am following the method mentioned here. But when i am doing npm install its saying some unmet dependencies are there and when i try to run npm run prod after that its ending up with the following error.

ERROR in ./visualizations/mapbox.jsx

Module not found: Error: Cannot resolve module 'react-map-gl' in /home/pebble/caravel/caravel/assets/visualizations

 @ ./visualizations/mapbox.jsx 19:18-41 

Needed help.