Ruby on rails 安装装置故障

我正在使用rails进行一个快速项目。我尝试在命令行上运行rake:db migrate，在rails g designe User之后，我得到以下错误日志：

Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:457:in `ensure in with_devise_exclusive_scope': undefined method `merge!' for #<ActionDispatch::Routing::Mapper::Scope:0x007fcbe5e766f8> (NoMethodError)
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:457:in `with_devise_exclusive_scope'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:248:in `block (2 levels) in devise_for'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:351:in `block in devise_scope'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/mapper.rb:940:in `block in constraints'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/mapper.rb:816:in `scope'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/mapper.rb:940:in `constraints'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:350:in `devise_scope'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:247:in `block in devise_for'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:223:in `each'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/devise-3.3.0/lib/devise/rails/routes.rb:223:in `devise_for'
    from /Users/ashleighalmeida/Rails-Blog/config/routes.rb:3:in `block in <top (required)>'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/route_set.rb:432:in `instance_exec'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/route_set.rb:432:in `eval_block'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/routing/route_set.rb:410:in `draw'
    from /Users/ashleighalmeida/Rails-Blog/config/routes.rb:1:in `<top (required)>'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `block in load'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/dependencies.rb:268:in `load'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:in `each'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:in `load_paths'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:16:in `reload!'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:26:in `block in updater'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/file_update_checker.rb:75:in `call'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/file_update_checker.rb:75:in `execute'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:7:in `execute'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/finisher.rb:81:in `block (2 levels) in <module:Finisher>'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:446:in `instance_exec'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:446:in `block in make_lambda'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:192:in `call'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:192:in `block in simple'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:504:in `call'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:504:in `block in call'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:504:in `each'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:504:in `call'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:92:in `_run_callbacks'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:776:in `_run_prepare_callbacks'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:81:in `run_callbacks'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/reloader.rb:83:in `prepare!'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/reloader.rb:55:in `prepare!'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/spring-1.3.6/lib/spring/application.rb:153:in `serve'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/spring-1.3.6/lib/spring/application.rb:131:in `block in run'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/spring-1.3.6/lib/spring/application.rb:125:in `loop'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/spring-1.3.6/lib/spring/application.rb:125:in `run'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/spring-1.3.6/lib/spring/application/boot.rb:18:in `<top (required)>'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/ashleighalmeida/.rbenv/versions/2.1.5/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from -e:1:in `<main>'

Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:457:in'sure in with_designe_exclusive_scope'：未定义的方法'merge！'对于#（命名者）
from/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:457:in `与designe\u独家范围'
from/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:248:designe_中的“块（2层）”中
from/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:351:“设计范围内的块”
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action\u dispatch/routing/mapper.rb:940:“约束中的块”
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action\u dispatch/routing/mapper.rb:816:“范围”中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action\u dispatch/routing/mapper.rb:940:in `约束'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:350:“设计范围”
from/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:247:in'block in designe_for'
from/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:223:in“each”中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/designe-3.3.0/lib/designe/rails/routes.rb:223:in“designe_for”
from/Users/ashleighalmeda/Rails Blog/config/routes.rb:3:in'block in'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action\u dispatch/routing/route\u set.rb:432:in`instance\u exec'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action\u dispatch/routing/route\u set.rb:432:in“eval\u block”
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/actionpack-4.2.1/lib/action\u dispatch/routing/route\u set.rb:410:“draw”中
来自/Users/ashleighalmeda/Rails Blog/config/routes.rb:1:in`'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/dependencies.rb:268:in'load'
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/dependencies.rb:268:“加载中的块”
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/dependencies.rb:240:在“加载依赖项”中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/dependencies.rb:268:in'load'
from/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:“加载路径中的块”
from/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:40:in“each”
from/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes\u reloader.rb:40:“加载路径”中
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:16:in“reload！”
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:26:in'block in updater'
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/file\u update\u checker.rb:75:“调用”中
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/file\u update\u checker.rb:75:“执行”中
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/routes_reloader.rb:7:“执行”中
from/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.1/lib/rails/application/finisher.rb:81:in“block（2层）in”
来自/Users/ashleghalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:446:in'instance\u exec'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:446:in'block in make\u lambda'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active_support/callbacks.rb:192:in“call”
from/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:192:在“简单块”中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:504:in'call'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:504:在“调用中的块”中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:504:在'each'中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:504:in'call'
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:92:在“运行”回调中
来自/Users/ashleighalmeda/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activesupport-4.2.1/lib/active\u support/callbacks.rb:776:in`\u run\p
rails g devise:install