title: ERROR NoMethodError: undefined method `debug_rjs=' for ActionView::Base:Class
body: <p>This project was built with rails 3.0.9.</p>
  
  <p>Now i updated the gems and Gemfile =></p>
  
  <pre><code>source 'http://rubygems.org'
  
  gem 'rails', '3.1.1'
  
  # Bundle edge Rails instead:
  # gem 'rails', :git =&gt; 'git://github.com/rails/rails.git'
  
  gem 'pg'
  gem 'devise'
  gem "will_paginate"
  gem 'ruby-debug19'
  gem 'rack', '1.3.3'
  gem 'jquery-rails'
  </code></pre>
  
  <p>After rails s, when i do , <a href="http://0.0.0.0:3000/" rel="noreferrer">http://0.0.0.0:3000/</a> i get this error =></p>
  
  <pre><code>=&gt; Booting WEBrick
  =&gt; Rails 3.1.1 application starting in development on http://0.0.0.0:3000
  =&gt; Call with -d to detach
  =&gt; Ctrl-C to shutdown server
  [2011-10-10 17:50:23] INFO  WEBrick 1.3.1
  [2011-10-10 17:50:23] INFO  ruby 1.9.2 (2011-02-18) [i686-linux]
  [2011-10-10 17:50:23] INFO  WEBrick::HTTPServer#start: pid=3103 port=3000
  [2011-10-10 17:50:31] ERROR NoMethodError: undefined method `debug_rjs=' for ActionView::Base:Class
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/railtie.rb:34:in `block (3 levels) in &lt;class:Railtie&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/railtie.rb:33:in `each'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/railtie.rb:33:in `block (2 levels) in &lt;class:Railtie&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `each'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/base.rb:216:in `&lt;class:Base&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/base.rb:133:in `&lt;module:ActionView&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_view/base.rb:8:in `&lt;top (required)&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/abstract_controller/view_paths.rb:90:in `view_paths='
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/abstract_controller/view_paths.rb:76:in `prepend_view_path'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/engine.rb:532:in `block (2 levels) in &lt;class:Engine&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `each'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/activesupport-3.1.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_controller/base.rb:234:in `&lt;class:Base&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_controller/base.rb:171:in `&lt;module:ActionController&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_controller/base.rb:3:in `&lt;top (required)&gt;'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:31:in `ext'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:15:in `match?'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/actionpack-3.1.1/lib/action_dispatch/middleware/static.rb:47:in `call'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/engine.rb:456:in `call'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/rack/content_length.rb:16:in `call'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.1.1/lib/rails/rack/log_tailer.rb:14:in `call'
      /home/user1/.rvm/gems/ruby-1.9.2-p180/gems/rack-1.3.3/lib/rack/handler/webrick.rb:59:in `service'
      /home/user1/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
      /home/user1/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
      /home/user1/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
  </code></pre>
  
  <p>What to do ?</p>