uninitialized constant Devise (NameError) with activeadmin

Question

I got below error when I installed active_admin gem with rails4 version.

taken gem: gem 'activeadmin', github: 'gregbell/active_admin'

/config/initializers/devise.rb:3:in `': uninitialized constant Devise (NameError)

Any Ideas?

Answer 1

You should include the devise gem in the Gemfile.Add this line to your Gemfile

gem 'devise'

Even though Devise comes as a dependency along with ActiveAdmin,you should manually include that in the Gemfile to load the gem.

For clarification,see this link.