我刚从另一台计算机上克隆了我正在处理的存储库。当我尝试通过运行rake db：migrate＆＃39;来尝试进行数据库迁移时我收到以下错误：
AbstractController::Helpers::MissingHelperError:
Missing helper file helpers//users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper.rb
我已经在这里尝试了最常见的答案：Rails: AbstractController::Helpers::MissingHelperError - Missing helper file application_helper.rb_helper.rb
它说要在终端中执行以下操作：
cd ~
mv projects projects1
mv projects1 projects
我也尝试过：
sudo ln -s Users users
但这对我不起作用。我该怎么办？
更新：
这是我的stacktrace：
ps-MacBook-Pro:projectlion psmith$ rake db:migrate
rake aborted!
AbstractController::Helpers::MissingHelperError: Missing helper file helpers//users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper.rb
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:154:in `rescue in block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:151:in `block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `map!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/metal/helpers.rb:93:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:111:in `helper'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/railties/helpers.rb:17:in `inherited'
/Users/psmith/projects/clie/projectlion/app/controllers/application_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/core_ext/string/inflections.rb:66:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise_controller.rb:2:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise/sessions_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:55:in `<module:Devise>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:6:in `<module:ActiveAdmin>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:5:in `<top (required)>'
/Users/psmith/projects/clie/projectlion/config/routes.rb:2:in `block in <top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
/Users/psmith/projects/clie/projectlion/config/routes.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `block in load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
/Users/psmith/projects/clie/projectlion/config/environment.rb:5:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `block in require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:379:in `block in run_tasks_blocks'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
LoadError: No such file to load -- /users/psmith/projects/clie/projectlion/app/helpers/application_helper.rb_helper
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:307:in `depend_on'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:225:in `require_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:152:in `block in modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `map!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:147:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/metal/helpers.rb:93:in `modules_for_helpers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/abstract_controller/helpers.rb:111:in `helper'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_controller/railties/helpers.rb:17:in `inherited'
/Users/psmith/projects/clie/projectlion/app/controllers/application_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `const_get'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:238:in `block in constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `inject'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/inflector/methods.rb:236:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/core_ext/string/inflections.rb:66:in `constantize'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise_controller.rb:2:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/devise-fea2b95c5fde/app/controllers/devise/sessions_controller.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:443:in `block in load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:633:in `new_constants_in'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:442:in `load_file'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:342:in `require_or_load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:480:in `load_missing_constant'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:180:in `const_missing'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:55:in `<module:Devise>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:6:in `<module:ActiveAdmin>'
/Users/psmith/.rvm/gems/ruby-2.2.0/bundler/gems/activeadmin-3f916d6bee73/lib/active_admin/devise.rb:5:in `<top (required)>'
/Users/psmith/projects/clie/projectlion/config/routes.rb:2:in `block in <top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:337:in `eval_block'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/actionpack-4.1.4/lib/action_dispatch/routing/route_set.rb:315:in `draw'
/Users/psmith/projects/clie/projectlion/config/routes.rb:1:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `block in load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `each'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:16:in `reload!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `call'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/file_update_checker.rb:75:in `execute'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:27:in `updater'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application/finisher.rb:71:in `block in <module:Finisher>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `instance_exec'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:30:in `run'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/initializable.rb:54:in `run_initializers'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:300:in `initialize!'
/Users/psmith/projects/clie/projectlion/config/environment.rb:5:in `<top (required)>'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `block in require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in `require'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:276:in `require_environment!'
/Users/psmith/.rvm/gems/ruby-2.2.0/gems/railties-4.1.4/lib/rails/application.rb:379:in `block in run_tasks_blocks'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `eval'
/Users/psmith/.rvm/gems/ruby-2.2.0/bin/ruby_executable_hooks:15:in `<main>'
答案 0 :(得分：5)
I was having the same challenge and after reading all of the answers and finding no success. This is how I fixed the error:
Open Finder and checked the path to my code. My path was myMac/Code/my apps.
I changed the Code to code and that fixed the error.
Now my path is myMac/code/my apps.
答案 1 :(得分：1)
昨天我遇到了同样的问题，我刚修好了。在为Xcode 6.3安装命令行工具之后，错误就开始了，并且恢复到Xcode 6.2的命令行工具解决了这个问题。您可以在此处下载以前版本的DMG：https://developer.apple.com/downloads/index.action
Ruby 2.2。*和Xcode 6.3命令行工具之间似乎存在某种冲突 - 希望它能很快得到正确修复！
答案 2 :(得分：1)
我有同样的问题。当我运行rake test时。
正如Strange error in rails - missing helper中所述。
在irb或pry中试试这个：
pry(main)> File.expand_path('./')
您将获得类似=> "/users/xxxx/Sites/xxxx"
然后在终端中运行pwd并比较路径差异。
你会得到类似/users/xxxx/sites/xxxx的东西。
如果是这种情况，您尝试的上述方法将起作用。它可能是ruby 2.2.0或者rails核心问题，它会弄乱网站名称并将其大写。所以在像linux或mac这样的区分大小写的操作系统中，它找不到路径。
但如果你不是这样，就像我一样。我建议你查看你正在使用的ruby版本。我使用ruby 2.2.0，然后切换2.2.1。并rails 4.2.0。
然后我切换到ruby 2.1.5。 rails版本。问题解决了。我的猜测是红宝石出了问题？..
答案 3 :(得分：1)
在我的情况下我使用的是Windows。使用Git shell，我在尝试从thinkbot安装gem管理时不断收到此错误。不断给我错误的命令＆＃34; AbstractController :: Helpers :: MissingHelperError＆＃34;，是：
$ rails generate administrate：install
我没有将我的文件夹重命名为小写，因为有很多答案建议。我改为使用了窗口的cmd。它运作得很好。