undefined method `environment' for nil:NilClass when importing Bootstrap into rails

Question

Getting error:

undefined method `environment\' for nil:NilClass
Extracted source (around line #5):


  
  <%         


        

Answer 1

I also met that exact same error after I upgraded rails from 4.0.3 to 4.0.4.

To solve solve this problem, only add

gem "sass-rails", "~> 4.0.2"

to your Gemfile and then

bundle install

Finally restart rails server

Then enjoy your programming in rails 4.0.4

Answer 2

When upgrading to Rails 4.0.5 you need to temporarily lock your sprockets at 2.11.x:

gem 'sprockets', '<= 2.11.0'

Then

bundle install

The exact error I was getting was:

ActionView::Template::Error: undefined method `environment' for nil:NilClass

For more context:

https://github.com/rails/sass-rails/issues/191

https://github.com/sstephenson/sprockets/issues/537