# Exception Notification **URL:** \ **Category:** Rails\ **Created:** [September 25, 2010, 1:20am UTC](https://www.ruby-forum.com/t/exception-notification/195554 "2010-09-25T01:20:38Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![badnaam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/e36b37/32.png) [@badnaam](https://www.ruby-forum.com/u/badnaam)\ **Post date:** [September 25, 2010, 1:20am UTC](https://www.ruby-forum.com/t/exception-notification/195554/1 "2010-09-25T01:20:38Z")
I am using the the exception notification plugin for rails version 2.3 This is what I have in my environment.rb file ExceptionNotification::Notifier.exception\_recipients = %w(removed\_email\_address@domain.invalid) In my app controller… ``` include ExceptionNotification::Notifiable ``` After installation when I start the server I get the following error /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active\_support/dependencies.rb:443:in `load_missing_constant' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active_support/dependencies.rb:80:in`const\_missing’ /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active\_support/dependencies.rb:92:in `const_missing' /home/myusername/Apps/myapp/config/environment.rb:115 /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/ initializer.rb:111:in`run’ /home/myusername/Apps/myapp/config/environment.rb:10 /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb: 31:in `gem_original_require' /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in`require’ /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active\_support/dependencies.rb:156:in `require' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active_support/dependencies.rb:521:in`new\_constants\_in’ /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active\_support/dependencies.rb:156:in `require' /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/ server.rb:84 /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb: 31:in`gem\_original\_require’ /usr/local/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb: 31:in `require' ./script/server:3 /usr/local/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.9/lib/ ruby-debug-ide.rb:109:in`debug\_load’ /usr/local/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.9/lib/ ruby-debug-ide.rb:109:in `debug_program' /usr/local/lib/ruby/gems/1.8/gems/ruby-debug-ide-0.4.9/bin/ rdebug-ide:87 /usr/local/bin/rdebug-ide:19:in`load’ /usr/local/bin/rdebug-ide:19 Uncaught exception: uninitialized constant ExceptionNotification When I launch the irb console it says… /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active\_support/dependencies.rb:443:in `load_missing_constant':NameError: uninitialized constant ExceptionNotification /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active_support/dependencies.rb:443:in`load\_missing\_constant’:NameError: uninitialized constant ApplicationController ---
**Author:** ![badnaam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/e36b37/32.png) [@badnaam](https://www.ruby-forum.com/u/badnaam)\ **Post date:** [September 25, 2010, 9:05pm UTC](https://www.ruby-forum.com/t/exception-notification/195554/2 "2010-09-25T21:05:14Z")
Anyone? ---
**Author:** ![badnaam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/e36b37/32.png) [@badnaam](https://www.ruby-forum.com/u/badnaam)\ **Post date:** [September 26, 2010, 10:00am UTC](https://www.ruby-forum.com/t/exception-notification/195554/3 "2010-09-26T10:00:42Z")
On 25 Sep 2010, at 21:04, badnaam wrote: > > In my app controller… > > > > ``` > > include ExceptionNotification::Notifiable > > > > ``` > > > > After installation when I start the server I get the following error > > > > /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ > > active\_support/dependencies.rb:443:in `load_missing_constant' /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/ active_support/dependencies.rb:80:in`const\_missing’ It says exception notifier isn’t loaded. You will have to work from there to find out why: - If it’s a gem, you might not have included it in your config.gem section - If it’s a plugin, you might not have installed it into the vendor/ plugins directory - … Best regards Peter De Berdt ---
**Author:** ![badnaam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/e36b37/32.png) [@badnaam](https://www.ruby-forum.com/u/badnaam)\ **Post date:** [September 28, 2010, 11:25pm UTC](https://www.ruby-forum.com/t/exception-notification/195554/4 "2010-09-28T23:25:49Z")
I have tried both. Made sure the plugin is installed and the gem exception\_notification (2.3.3.0) is installed and it’s in my enviornment.rb file as configm.gem “exception\_notification” I followed to documentation to the T. It’s on rails 2.3.5.