Sass::SyntaxError: File to import not found or unreadable: bootstrap-sprockets

After making changes to Gemfile, do not forget to restart the server with rails s

Restarting the rails server worked like a charm! :D

I solved this issue by upgrading bootstrap-sass

gem 'bootstrap-sass', '3.2.0.2'

ruby-on-rails twitter-bootstrap

Please restart you rails server after every changes in Gemfile

rails server

CodeHunter