Which gem is breaking Rails application.css.scss wrong number of arguments 3 for 2

Question

Okay. This is a new problem caused by a gem update. Calling bundle update breaks my rails application. Here are the gems that changed:

# Gemfile.lock
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Answer 1

For solving it, I remove Gem using compass-rails.

In my case I was using chosen-rails, replacing it with select2, now all work fine with 'rails', '4.2.0' and 'sass-rails', '~> 5.0.0'