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

Removing compass from my gemfile (remember bundle install) and then using the new sprockets beta fixed it for me.

gem "sprockets", "~>3.0.0.beta" in gemfile. Then bundle update sprockets.

Enjoy :)