# Webrick failing with "NameError: cannot remove Object::Unkno

**URL:** <https://www.ruby-forum.com/t/webrick-failing-with-nameerror-cannot-remove-object-unkno/89088>\
**Category:** Rails\
**Created:** [March 17, 2007, 5:02am UTC](https://www.ruby-forum.com/t/webrick-failing-with-nameerror-cannot-remove-object-unkno/89088 "2007-03-17T05:02:24Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [March 17, 2007, 5:02am UTC](https://www.ruby-forum.com/t/webrick-failing-with-nameerror-cannot-remove-object-unkno/89088/1 "2007-03-17T05:02:24Z")

</div>

Hi,

I just downloaded the latest rails, and tried to run webrick. I get  
this strange  
set of error messages. It looks like the real error is  
NameError: cannot remove Object::UnknownPropertyMethod

I never had this problem with older versions, and the ‘fastcgi’  
variant, running  
under lighttpd runs fine. Any ideas why webrick appears to be  
broken?

Thanks,

David

DEPRECATION WARNING: model is deprecated and will be removed from  
Rails 2.0 See [Ruby on Rails — A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern.](http://www.rubyonrails.org/depr)  
ecation for details. (called from ./script/…/config/…/app/  
controllers/application.rb:7)  
DEPRECATION WARNING: depend\_on is deprecated and will be removed from  
Rails 2.0 See [http://www.rubyonrails.org/](http://www.rubyonrails.org/)  
deprecation for details. (called from model\_without\_deprecation at /  
usr/local/lib/ruby/gems/1.8/gems/actionpack-  
1.13.3/lib/action\_controller/deprecated\_dependencies.rb:13)  
DEPRECATION WARNING: model is deprecated and will be removed from  
Rails 2.0 See [Ruby on Rails — A web-app framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern.](http://www.rubyonrails.org/depr)  
ecation for details. (called from ./script/…/config/…/app/  
controllers/a pplication.rb:8)  
DEPRECATION WARNING: depend\_on is deprecated and will be removed from  
Rails 2.0 See [http://www.rubyonrails.org/](http://www.rubyonrails.org/)  
deprecation for details. (called from model\_without\_deprecation at /  
usr/local/lib/ruby/gems/1.8/gems/actionpack-  
1.13.3/lib/action\_controller/deprecated\_dependencies.rb:13)  
#\<NameError: cannot remove Object::UnknownPropertyMethod\>  
[“/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/  
active\_support/dependencies.rb:422:in `remove_const' ", "/usr/ local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/ dependencies.rb:422:in `send’”, “/u sr/local/lib/ruby/gems/1.8/  
gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:422:in  
`remove_constant'" , "/usr/local/lib/ruby/gems/1.8/gems/ activesupport-1.4.2/lib/active_support/dependencies.rb:273:in `remove\_unloa dable\_constants!'”, “/usr/local/lib/ruby/gems/  
1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:  
27 3:in `each'", "/usr/local/lib/ruby/gems/1.8/gems/ activesupport-1.4.2/lib/active_support/dependencies.rb:273:in ` remove\_unloadable\_constants!'”, “/usr/local/lib/ruby/gems/  
1.8/gems/activesupport-1.4.2/lib/active\_support/depend  
encies.rb:72:in `clear'", "/usr/local/lib/ruby/gems/1.8/gems/ rails-1.2.3/lib/dispatcher.rb:60:in `reset\_applicat ion!'”, “/  
usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:116:in  
`reset_after_dispatch'", "/usr/l ocal/lib/ruby/gems/1.8/gems/ rails-1.2.3/lib/dispatcher.rb:51:in `dispatch’”, “/usr/local/lib/ruby/  
gems/1.8/gems/ rails-1.2.3/lib/webrick\_server.rb:113:in  
`handle_dispatch'", "/usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/ lib/ webrick_server.rb:79:in `service’”, “/usr/local/lib/ruby/  
1.8/webrick/httpserver.rb:104:in `service'", "/usr/loca l/lib/ ruby/1.8/webrick/httpserver.rb:65:in `run’”, “/usr/local/lib/ruby/1.8/  
webrick/server.rb:173:in `start_thre ad'", "/usr/local/lib/ ruby/1.8/webrick/server.rb:162:in `start’”, “/usr/local/lib/ruby/1.8/  
webrick/server.rb:162 :in `start_thread'", "/usr/local/lib/ ruby/1.8/webrick/server.rb:95:in `start’”, “/usr/local/lib/ruby/1.8/  
webrick /server.rb:92:in `each'", "/usr/local/lib/ruby/1.8/ webrick/server.rb:92:in `start’”, “/usr/local/lib/ruby/1.8/we  
brick/server.rb:23:in `start'", "/usr/local/lib/ruby/1.8/webrick/ server.rb:82:in `start’”, “/usr/local/lib/ruby/ gems/1.8/gems/  
rails-1.2.3/lib/webrick\_server.rb:63:in `dispatch'", "/usr/local/lib/ ruby/gems/1.8/gems/rails-1.2. 3/lib/commands/servers/ webrick.rb:59", "/usr/local/lib/ruby/site_ruby/1.8/rubygems/ custom_require.rb:27:in `gem\_ original\_require’”, “/usr/local/  
lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in `require'", "/ usr/local/ lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/ active_support/dependencies.rb:495:in `require’”, “/usr/local/  
lib /ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/  
dependencies.rb:342:in `new_constants_in'", "/usr/loc al/lib/ ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/ dependencies.rb:495:in `require’”, “/usr/local/ lib/ruby/gems/  
1.8/gems/rails-1.2.3/lib/commands/server.rb:39”, “/usr/local/lib/ruby/  
site\_ruby/1.8/rubygems/custo m\_require.rb:27:in  
`gem_original_require'", "/usr/local/lib/ruby/site_ruby/1.8/rubygems/ custom_require.rb:27:in `require’”, “/usr/local/lib/ruby/gems/  
1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`re quire'", "/usr/local/lib/ruby/gems/1.8/gems/ activesupport-1.4.2/lib/active_support/dependencies.rb:342:in `new\_c onstants\_in’”, "/usr/local/lib/ruby/gems/1.8/gems/  
activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require'", "script/server:3"] [2007-03-16 22:25:14] ERROR `/system/configure’ not found.  
76.185.11.158 - - [16/Mar/2007:22:25:13 CDT] “GET /system/configure  
HTTP/1.1” 404 292
