我一直遇到问题一天。我在谷歌找到的任何东西到目前为止都没有。请帮忙。
我在rspec：install命令期间收到Method not found Error。我是一个新手试图跟踪rails教程，我不能使用确切的Gemfile，因为一些Gems已经过时了。
由于
*bash-3.2$ rails generate rspec:install
/Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/railtie/configuration.rb:95:in `method_missing': undefined method `action_mailer' for #<Rails::Application::Configuration:0x007fe2c4080670> (NoMethodError)
from /Users/user22/Projects/rails_projects/sample_app/config/environments/development.rb:17:in `block in <top (required)>'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/railtie/configurable.rb:24:in `class_eval'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/railtie/configurable.rb:24:in `configure'
from /Users/user22/Projects/rails_projects/sample_app/config/environments/development.rb:1:in `<top (required)>'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `require'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `block in require'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:214:in `load_dependency'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/activesupport-4.0.4/lib/active_support/dependencies.rb:229:in `require'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/engine.rb:591:in `block (2 levels) in <class:Engine>'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/engine.rb:590:in `each'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/engine.rb:590:in `block in <class:Engine>'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/initializable.rb:30:in `instance_exec'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/initializable.rb:30:in `run'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/initializable.rb:55:in `block in run_initializers'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:226:in `block in tsort_each'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:418:in `block (2 levels) in each_strongly_connected_component_from'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:427:in `each_strongly_connected_component_from'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:417:in `block in each_strongly_connected_component_from'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/initializable.rb:44:in `each'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/initializable.rb:44:in `tsort_each_child'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:411:in `call'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:411:in `each_strongly_connected_component_from'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:347:in `block in each_strongly_connected_component'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `each'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `call'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:345:in `each_strongly_connected_component'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:224:in `tsort_each'
from /Users/user22/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/tsort.rb:205:in `tsort_each'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/initializable.rb:54:in `run_initializers'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/application.rb:215:in `initialize!'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/railtie/configurable.rb:30:in `method_missing'
from /Users/user22/Projects/rails_projects/sample_app/config/environment.rb:5:in `<top (required)>'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/application.rb:189:in `require'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/application.rb:189:in `require_environment!'
from /Users/user22/.rvm/gems/ruby-2.1.1@global/gems/railties-4.0.4/lib/rails/commands.rb:44:in `<top (required)>*
bash-3.2$ cat Gemfile.lock
GEM
remote: https://rubygems.org/
specs:
actionmailer (4.0.4)
actionpack (= 4.0.4)
mail (~> 2.5.4)
actionpack (4.0.4)
activesupport (= 4.0.4)
builder (~> 3.1.0)
erubis (~> 2.7.0)
rack (~> 1.5.2)
rack-test (~> 0.6.2)
activemodel (4.0.4)
activesupport (= 4.0.4)
builder (~> 3.1.0)
activerecord (4.0.4)
activemodel (= 4.0.4)
activerecord-deprecated_finders (~> 1.0.2)
activesupport (= 4.0.4)
arel (~> 4.0.0)
activerecord-deprecated_finders (1.0.3)
activesupport (4.0.4)
i18n (~> 0.6, >= 0.6.9)
minitest (~> 4.2)
multi_json (~> 1.3)
thread_safe (~> 0.1)
tzinfo (~> 0.3.37)
arel (4.0.2)
atomic (1.1.16)
builder (3.1.4)
capybara (2.2.1)
mime-types (>= 1.16)
nokogiri (>= 1.3.3)
rack (>= 1.0.0)
rack-test (>= 0.5.4)
xpath (~> 2.0)
coffee-rails (4.0.1)
coffee-script (>= 2.2.0)
railties (>= 4.0.0, < 5.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.7.0)
diff-lcs (1.2.5)
erubis (2.7.0)
execjs (2.0.2)
hike (1.2.3)
i18n (0.6.9)
jquery-rails (3.1.0)
railties (>= 3.0, < 5.0)
thor (>= 0.14, < 2.0)
json (1.8.1)
mail (2.5.4)
mime-types (~> 1.16)
treetop (~> 1.4.8)
mime-types (1.25.1)
mini_portile (0.5.2)
minitest (4.7.5)
multi_json (1.9.2)
nokogiri (1.6.1)
mini_portile (~> 0.5.0)
pg (0.17.1)
polyglot (0.3.4)
rack (1.5.2)
rack-test (0.6.2)
rack (>= 1.0)
rails (4.0.4)
actionmailer (= 4.0.4)
actionpack (= 4.0.4)
activerecord (= 4.0.4)
activesupport (= 4.0.4)
bundler (>= 1.3.0, < 2.0)
railties (= 4.0.4)
sprockets-rails (~> 2.0.0)
railties (4.0.4)
actionpack (= 4.0.4)
activesupport (= 4.0.4)
rake (>= 0.8.7)
thor (>= 0.18.1, < 2.0)
rake (10.1.1)
rspec-core (2.14.8)
rspec-expectations (2.14.5)
diff-lcs (>= 1.1.3, < 2.0)
rspec-mocks (2.14.6)
rspec-rails (2.14.1)
actionpack (>= 3.0)
activemodel (>= 3.0)
activesupport (>= 3.0)
railties (>= 3.0)
rspec-core (~> 2.14.0)
rspec-expectations (~> 2.14.0)
rspec-mocks (~> 2.14.0)
sass (3.3.3)
sass-rails (4.0.1)
railties (>= 4.0.0, < 5.0)
sass (>= 3.1.10)
sprockets-rails (~> 2.0.0)
sprockets (2.12.0)
hike (~> 1.2)
multi_json (~> 1.0)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
sprockets-rails (2.0.1)
actionpack (>= 3.0)
activesupport (>= 3.0)
sprockets (~> 2.8)
sqlite3 (1.3.9)
thor (0.18.1)
thread_safe (0.3.0)
atomic (>= 1.1.7, < 2)
tilt (1.4.1)
treetop (1.4.15)
polyglot
polyglot (>= 0.3.1)
turbolinks (2.2.1)
coffee-rails
tzinfo (0.3.39)
uglifier (2.5.0)
execjs (>= 0.3.0)
json (>= 1.8.0)
xpath (2.0.0)
nokogiri (~> 1.3)
PLATFORMS
ruby
DEPENDENCIES
actionmailer (~> 4.0.4)
capybara
coffee-rails
jquery-rails
pg
rails (~> 4.0.3)
rspec-rails
sass-rails
sqlite3
turbolinks
uglifier
编辑：
在下面回答几个问题。
@Wayne：
你的包很完整！
未安装组生产中的宝石。
使用bundle show [gemname]查看捆绑的gem的安装位置。
@Taryn
来源＆＃39; https://rubygems.org＆＃39; 宝石＆＃39; rails＆＃39;，＆＃39;〜＆gt; 4.0.3＆＃39; group：开发，：test do gem＆＃39; sqlite3＆＃39; 宝石＆＃34; rspec-rails＆＃34; 端
组：资产 宝石＆＃39; sass-rails＆＃39; gem＆＃39; coffee-rails＆＃39; 宝石＆＃39; uglifier＆＃39; 结束 gem＆＃39; jquery-rails＆＃39; gem＆＃34; actionmailer＆＃34;，＆＃34;〜＆gt; 4.0.4＆＃34; 组：测试做 宝石＆＃39;水豚＆＃39; gem＆＃34; actionmailer＆＃34;，＆＃34;〜＆gt; 4.0.4＆＃34; 结束 组：生产做 宝石＆＃39;＆＃39; 宝石＆＃39; turbolinks＆＃39; 端
@Andreas： 很好的一点。我有下面的第16行和第17行。
config.action_mailer.raise_delivery_errors = false
根据你的评论，我评论了＃17并重新安装了它，它运行正常。我没有对该项目进行任何更改。它是使用rails生成的（完全）。我认为通过评论＃17我可能会错过一个功能。我可以通过一种方式修复它而不评论正确吗？
谢谢大家。