sidekiq error

Gemfile

source 'http://rubygems.org'

gem 'rails'

# Bundle edge Rails instead:
# gem 'rails',     :git => 'git://github.com/rails/rails.git'

gem 'sqlite3'
gem 'sidekiq'
gem 'sinatra'
gem 'slim'


# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails'
  gem 'coffee-rails'
  gem 'uglifier'
  gem 'therubyracer'
end

gem 'jquery-rails'

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'

group :test do
  # Pretty printed test output
  gem 'turn', :require => false
end

rotues.rb

require 'sidekiq/web'

Workling::Application.routes.draw do

  mount Sidekiq::Web, at: "/sidekiq"

end

Sidekiq.log

NoMethodError - undefined method `join' for #<String:0x000000044bf740>:
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/bundler/gems/sidekiq-729321b1fef0/web/views/index.slim:11:in `evaluate_source'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/tilt-1.3.3/lib/tilt/template.rb:209:in `instance_eval'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/tilt-1.3.3/lib/tilt/template.rb:209:in `evaluate_source'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/tilt-1.3.3/lib/tilt/template.rb:144:in `cached_evaluate'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/tilt-1.3.3/lib/tilt/template.rb:127:in `evaluate'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/tilt-1.3.3/lib/tilt/template.rb:76:in `render'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:686:in `render'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:640:in `slim'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/bundler/gems/sidekiq-729321b1fef0/lib/sidekiq/web.rb:134:in `block in <class:Web>'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:1265:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:1265:in `block in compile!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:835:in `[]'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:835:in `block (3 levels) in route!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:851:in `route_eval'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:835:in `block (2 levels) in route!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:872:in `block in process_route'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:870:in `catch'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:870:in `process_route'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:834:in `block in route!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:833:in `each'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:833:in `route!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:936:in `dispatch!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:769:in `block in call!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:921:in `block in invoke'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:921:in `catch'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:921:in `invoke'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:769:in `call!'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:755:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/bundler/gems/sidekiq-729321b1fef0/lib/sidekiq/web.rb:26:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-protection-1.2.0/lib/rack/protection/xss_header.rb:22:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-protection-1.2.0/lib/rack/protection/path_traversal.rb:16:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-protection-1.2.0/lib/rack/protection/json_csrf.rb:17:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-protection-1.2.0/lib/rack/protection/base.rb:47:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-protection-1.2.0/lib/rack/protection/xss_header.rb:22:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/nulllogger.rb:9:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/head.rb:9:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/showexceptions.rb:21:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:99:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:1389:in `block in call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:1471:in `synchronize'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/sinatra-1.3.3/lib/sinatra/base.rb:1389:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/journey-1.0.4/lib/journey/router.rb:68:in `block in call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/journey-1.0.4/lib/journey/router.rb:56:in `each'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/journey-1.0.4/lib/journey/router.rb:56:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/routing/route_set.rb:600:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/etag.rb:23:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/conditionalget.rb:25:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/head.rb:14:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/params_parser.rb:21:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/flash.rb:242:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:205:in `context'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:200:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/cookies.rb:339:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.8/lib/active_record/query_cache.rb:64:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:405:in `_run__3974146253505698351__call__1942178242478857637__callbacks'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:405:in `__run_callback'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.8/lib/active_support/callbacks.rb:81:in `run_callbacks'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/reloader.rb:65:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.8/lib/rails/rack/logger.rb:26:in `call_app'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.8/lib/rails/rack/logger.rb:16:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/request_id.rb:22:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/methodoverride.rb:21:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/runtime.rb:17:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.8/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/lock.rb:15:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/actionpack-3.2.8/lib/action_dispatch/middleware/static.rb:62:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.8/lib/rails/engine.rb:479:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.8/lib/rails/application.rb:223:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/content_length.rb:14:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.8/lib/rails/rack/log_tailer.rb:17:in `call'
	/home/driv3r/.rvm/gems/ruby-1.9.2-p290/gems/rack-1.4.1/lib/rack/handler/webrick.rb:59:in `service'
	/home/driv3r/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
	/home/driv3r/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
	/home/driv3r/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'



Started GET "/sidekiq/" for 127.0.0.1 at 2012-09-24 20:55:52 +0200


Started GET "/sidekiq/__sinatra__/500.png" for 127.0.0.1 at 2012-09-24 20:55:52 +0200