我收到了这个奇怪的错误：downstream app not set
但是我的应用响应并且运行良好。
我已经检查过了 - 我没有找到任何未定义路由的请求。 （也许有一些工具可以调试）
也检查了Google。
请帮助 - 如何删除此错误。
日志：
00:52:51 web.1 | started with pid 13052 00:52:59 web.1 | 127.0.0.1 - - [01/Feb/2013 00:52:59] "GET /manage HTTP/1.1" 200 5046 0.3123 00:52:59 web.1 | 127.0.0.1 - - [01/Feb/2013 00:52:59] "GET /javascripts/jquery.imagesloaded.min.js HTTP/1.1" 304 - 0.0138 00:52:59 web.1 | 127.0.0.1 - - [01/Feb/2013 00:52:59] "GET /javascripts/jquery.masonry.min.js HTTP/1.1" 304 - 0.0121 00:52:59 web.1 | 127.0.0.1 - - [01/Feb/2013 00:52:59] "GET /javascripts/jquery.capty.custom.js HTTP/1.1" 304 - 0.0075 00:52:59 web.1 | 127.0.0.1 - - [01/Feb/2013 00:52:59] "GET /stylesheets/articles_grid.css HTTP/1.1" 304 - 0.0131 00:52:59 web.1 | 127.0.0.1 - - [01/Feb/2013 00:52:59] "GET /javascripts/articles_grid.js HTTP/1.1" 304 - 0.0008 00:53:05 web.1 | RuntimeError - downstream app not set: 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:688:in `forward' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:772:in `route_missing' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:719:in `route!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:715:in `route!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:715:in `route!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:843:in `dispatch!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:644:in `block in call!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:808:in `instance_eval' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:808:in `block in invoke' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:808:in `catch' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:808:in `invoke' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:644:in `call!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/base.rb:629:in `call' 00:53:05 web.1 | /home/blacktea/Projects/*******************/app.rb:22:in `call' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.3.2/lib/rack/session/abstract/id.rb:195:in `context' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.3.2/lib/rack/session/abstract/id.rb:190:in `call' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.3.2/lib/rack/head.rb:9:in `call' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.3.2/lib/rack/commonlogger.rb:20:in `call' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/sinatra-1.2.6/lib/sinatra/showexceptions.rb:21:in `call' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/rack-1.3.2/lib/rack/methodoverride.rb:24:in `call' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/connection.rb:84:in `block in pre_process' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/connection.rb:82:in `catch' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/connection.rb:82:in `pre_process' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/connection.rb:57:in `process' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/connection.rb:42:in `receive_data' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/backends/base.rb:61:in `start' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/server.rb:159:in `start' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/controllers/controller.rb:86:in `start' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/runner.rb:185:in `run_command' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/lib/thin/runner.rb:151:in `run!' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/gems/thin-1.2.11/bin/thin:6:in `' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/bin/thin:19:in `load' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/bin/thin:19:in `' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `eval' 00:53:05 web.1 | /home/blacktea/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `'
这是layout.haml
!!!
%html
%head
%meta{:content => "text/html; charset=UTF-8", "http-equiv" => "content-type"}
%title The Project
%script{:src => "https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js", :type => "text/javascript"}
%script{:src => "/javascripts/jquery.imagesloaded.min.js", :type => "text/javascript"}
%script{:src => "/javascripts/jquery.masonry.min.js", :type => "text/javascript"}
%script{:src => "/javascripts/jquery.capty.custom.js", :type => "text/javascript"}
%link{:rel => :stylesheet, :href => "/stylesheets/articles_grid.css", :type => "text/css"}
%script{:src => "/javascripts/articles_grid.js", :type => "text/javascript"}
%body{:onload => "framesetsize(800, 1000)", :style => "overlflow: hidden;"}
%script{:src => "http://connect.facebook.net/en_US/all.js", :type => "text/javascript"}
:javascript
FB.init({
appId : '#{ @app['id'] }',
cookie : true
});
=yield
答案 0 :(得分：1)
我的开发浏览器（Chrome）似乎不断要求/favicon.ico
get "/favicon.ico" do
end
解决了问题