错误无法加载此类文件 - user_agent / browsers / playstation（LoadError）

在项目ruby v2.1.4和轨道3.2.13中的运行轨道s或轨道c中

/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in require'：无法加载此类文件 - user_agent / browsers / playstation（LoadError）来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:inblock in require'from / home / kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236：in load_dependency'from /home/kop/.rvm/gems/ruby-2.1 .4 @ rails3213 / gems / activesupport-3.2.13 / lib / active_support / dependencies.rb:251：inrequire'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/useragent-0.16 . 0 / lib / user_agent / browsers.rb：12：in <top（required）>'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support /dependencies.rb:251:inrequire'来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in block in require 'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/ac tivesupport-3.2.13 / lib / active_support / dependencies.rb:236：inload_dependency'来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies .rb：251：在/ home / kop中的'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/useragent-0.16.0/lib/user_agent.rb:2:in' /.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in require'from /home/kop/.rvm/gems/ruby-2.1 . 4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251：inblock in require'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2 .13 / lib / active_support / dependencies.rb：236：in load_dependency'来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb ：251：inrequire'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/useragent-0.16.0/lib/useragent.rb:1:in <top（required）>'from / home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/de pendencies.rb：251：inrequire'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in block in require'来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:inload_dependency'来自/home/kop/.rvm/gems/ ruby-2.1.4@rails3213/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251：in require'from /home/kop/rails/howtobuyafranchise/lib/franchise_core/lib/franchise.rb:11 ：在'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in require'from / home / kop / . rvm/gems/ruby-2.1.4@rails3213/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:inclock(kx/2/vop//中包含inblock（2级）来自/home/kop/.rvm/gems/ruby -2.1.4@rails3213/gems/bundler-1.10.6/lib/bundler/runtime.rb:72：来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/bundler -1.10.6 / lib / bundler / runtime.rb：72：inblock in require'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/bundler-1.10 .6 / lib / bundler / runtime.rb：61：在每个'来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/bundler-1.10.6/lib/bundler/runtime.rb ：61：inrequire'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/bundler-1.10.6/lib/bundler.rb:134:in require'from / home / kop / rails /howtobuyafranchise/config/application.rb:7:in来自/home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/railties-3.2.13/lib/rails/commands.rb:39：在'from /home/kop/.rvm/gems/ruby-2.1.4@rails3213/gems/railties-3.2.13/lib/rails/commands.rb:39:in'from script / rails：6：in require'from script / rails：6：in'

我不知道修复此错误请帮助我