Uninitialized gem constant

I installed the JWT gem - https://github.com/progrium/ruby-jwt Of course there is gem 'jwt'

in Gemfile

. Regardless, I have an error

uninitialized constant HomeController::JWT

      

        
        
        
      

    

in HomeController

class HomeController < ApplicationController

 def method1
   @jwt_token = JWT.encode({.... })
 end

end