How to fix "uninitialized constant User"

Question

I tried to make a new Devise model "User", but I can't. My server won't load either. I keep getting the error: "uninitialized constant User".

Here's what I tried:

• bundle install, bundle update, and gem pristine --all
• Adding require 'devise' into my application.rb
• Restarting my server, which now won't launch
• Running rails g devise:install in my terminal

Here's my gem file:

source 'https://rubygems.org'

gem 'rails', '4.2.6'
gem 'pg', '~> 0.15'
gem 'sass-rails', '~> 5.0'
gem 'uglifier', '>= 1.3.0'
gem 'coffee-rails', '~> 4.1.0'

gem 'jquery-rails'
gem 'turbolinks'
gem 'jbuilder', '~> 2.0'
gem 'sdoc', '~> 0.4.0', group: :doc
gem 'bootstrap-sass', '~> 3.3.6'
gem 'rails_12factor'
gem "figaro"
gem 'devise'
gem 'paperclip', github: 'thoughtbot/paperclip' 

group :development, :test do
  gem 'byebug'
  gem 'sqlite3'
end

group :development do
  gem 'web-console', '~> 2.0'
  gem 'spring'
end

Stack trace:

 WARNING: Nokogiri was built against LibXML version 2.9.4, but has dynamically loaded 2.9.2
/Users/Sam/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/inflector/methods.rb:261:in `const_get': uninitialized constant User (NameError)
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/inflector/methods.rb:261:in `block in constantize'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/inflector/methods.rb:259:in `each'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/inflector/methods.rb:259:in `inject'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.6/lib/active_support/inflector/methods.rb:259:in `constantize'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/devise-4.1.1/lib/devise.rb:289:in `get'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/devise-4.1.1/lib/devise/mapping.rb:81:in `to'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/devise-4.1.1/lib/devise/mapping.rb:76:in `modules'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/devise-4.1.1/lib/devise/mapping.rb:93:in `routes'
    from /Users/Sam/.rvm/gems/ruby-2.2.1/gems/devise-4.1.1/lib/devise/mapping.rb:160:in `default_used_route'

I'm not sure what is happening.

Answer 1

Have you generated your model?

rails generate devise User