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我正在关注this tutorial并刚刚启动。我已经在gem install rails上安装了Ruby on Rails，并创建了一个rails new blog的博客。错误“Validate_default_type！”：在Windows上运行Ruby on Rails时，选项的默认值必须与其类型（ArgumentError）匹配
本教程现在说我需要运行rails generate controller Welcome index，但是当我这样做，我得到这个错误：
C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/parser/option.rb:130:in `validate_default_type!': An option's default must match its type. (ArgumentError)
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/parser/option.rb:113:in `validate!'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/parser/argument.rb:24:in `initialize'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/parser/option.rb:9:in `initialize'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/base.rb:544:in `new'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/base.rb:544:in `build_option'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/thor-0.19.2/lib/thor/base.rb:278:in `class_option'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/generators/base.rb:202:in `class_option'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/generators/base.rb:178:in `block in hook_for'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/generators/base.rb:168:in `each'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/generators/base.rb:168:in `hook_for'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/jbuilder-2.6.0/lib/generators/rails/scaffold_controller_generator.rb:9:in `<class:ScaffoldControllerGenerator>'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/jbuilder-2.6.0/lib/generators/rails/scaffold_controller_generator.rb:6:in `<module:Generators>'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/jbuilder-2.6.0/lib/generators/rails/scaffold_controller_generator.rb:5:in `<module:Rails>'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/jbuilder-2.6.0/lib/generators/rails/scaffold_controller_generator.rb:4:in `<top (required)>'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:293:in `require'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:293:in `block in require'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:259:in `load_dependency'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:293:in `require'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/jbuilder-2.6.0/lib/jbuilder/railtie.rb:32:in `block in <class:Railtie>'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:230:in `call'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:230:in `block in run_generators_blocks'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:247:in `each'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:247:in `each_registered_block'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/railtie.rb:230:in `run_generators_blocks'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/application.rb:453:in `block in run_generators_blocks'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/engine/railties.rb:13:in `each'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/engine/railties.rb:13:in `each'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/application.rb:453:in `run_generators_blocks'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/engine.rb:465:in `load_generators'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:144:in `generate_or_destroy'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:60:in `generate'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:in `run_command!'
from C:/Ruby22/lib/ruby/gems/2.2.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in `<top (required)>'
from bin/rails:4:in `require'
from bin/rails:4:in `<main>'
我发现对堆栈溢出类似的问题问同样的问题here，但海报当被要求显示他的gem list时从未回应。所以这里是我的：
actioncable (5.0.0.1)
actionmailer (5.0.0.1)
actionpack (5.0.0.1)
actionview (5.0.0.1)
activejob (5.0.0.1)
activemodel (5.0.0.1)
activerecord (5.0.0.1)
activesupport (5.0.0.1)
arel (7.1.4)
bigdecimal (1.2.7, default: 1.2.6)
builder (3.2.2)
bundler (1.13.6)
coffee-rails (4.2.1)
coffee-script (2.4.1)
coffee-script-source (1.11.1)
concurrent-ruby (1.0.2)
debug_inspector (0.0.2)
erubis (2.7.0)
execjs (2.7.0)
globalid (0.3.7)
i18n (0.7.0)
io-console (0.4.6, default: 0.4.3)
jbuilder (2.6.0)
jquery-rails (4.2.1)
json (2.0.2, default: 1.8.1)
loofah (2.0.3)
mail (2.6.4)
method_source (0.8.2)
mime-types (3.1)
mime-types-data (3.2016.0521)
mini_portile2 (2.1.0)
minitest (5.9.1, 5.4.3)
multi_json (1.12.1)
nio4r (1.2.1)
nokogiri (1.6.8.1 x86-mingw32)
power_assert (0.3.1, 0.2.2)
psych (2.2.0, default: 2.0.8)
puma (3.6.2)
rack (2.0.1, 1.6.4)
rack-protection (1.5.3)
rack-test (0.6.3)
rails (5.0.0.1)
rails-dom-testing (2.0.1)
rails-html-sanitizer (1.0.3)
railties (5.0.0.1)
rake (11.3.0, default: 10.4.2)
rdoc (5.0.0, default: 4.2.0)
sass (3.4.22)
sass-rails (5.0.6)
sinatra (1.4.7)
sprockets (3.7.0)
sprockets-rails (3.2.0)
sqlite3 (1.3.12 x86-mingw32)
test-unit (3.2.3, 3.0.8)
thor (0.19.2, 0.19.1)
thread_safe (0.3.5)
tilt (2.0.5)
turbolinks (5.0.1)
turbolinks-source (5.0.0)
tzinfo (1.2.2)
tzinfo-data (1.2016.10)
uglifier (3.0.3)
web-console (3.4.0)
websocket-driver (0.6.4)
websocket-extensions (0.1.2)
有没有人遇到过这个错误？如果是这样，你是如何解决它的？
哈哈我想我只是不幸，我试图在这个准确的时间学习Rails！ 对于那些在Windows上，你可以进入你的Gemfile.lock和Ctrl + F的“Thor”，然后改变说'thor（0.19.2）'的实例为'thor（0.19.1）' –
我知道对？我刚刚创建了一个全新的Rails应用程序，就像等待什么？结果发现宝石在一个小时前得到了更新，所以看起来在过去一个小时内制作新的Rails应用的任何人都会遇到这种情况。希望他们尽快修好宝石。 – excid3
我必须在软件包安装前运行软件包更新 – weezilla