Undefined method 'views' after installing devise

Undefined method 'views' after installing devise

References

Reference NO 1

http://stackoverflow.com/questions/15165448/undefined-method-views-after-installing-devise

Reference NO 2

http://stackoverflow.com/questions/10679061/undefined-method-first-name-for-nilnilclass-after-installing-devise

Reference NO 3

https://github.com/scambra/devise_invitable

Reference NO 4

http://railscasts.com/episodes/284-active-admin?view=comments

Reference NO 5

http://railscasts.com/episodes/210-customizing-devise?view=comments

Reference NO 6

https://groups.google.com/d/topic/plataformatec-devise/iVKAMVSjEMI

Reference NO 7

http://railsapps.github.io/tutorial-rails-mongoid-devise.html

Reference NO 8

#EANF#