我无法使用"rails new blog“创建新的应用程序

Question

我在创建一个新项目的过程中得到了这个错误，所以我应该在哪里添加雷神的gem版本，正如在给定的重复问题中所解释的那样。

当我试图创建一个新的rails应用程序时，我得到了这个错误。当我运行命令rails -v时，我也得到了同样的错误

umesh@umesh-Lenovo-G570:~/work/practice$ rails new blog
/home/umesh/.rvm/gems/ruby-2.3.1/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 /home/umesh/.rvm/gems/ruby-2.3.1/gems/thor-0.19.2/lib/thor/parser/option.rb:113:in `validate!'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/thor-0.19.2/lib/thor/parser/argument.rb:24:in `initialize'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/thor-0.19.2/lib/thor/parser/option.rb:9:in `initialize'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/thor-0.19.2/lib/thor/base.rb:544:in `new'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/thor-0.19.2/lib/thor/base.rb:544:in `build_option'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/thor-0.19.2/lib/thor/base.rb:278:in `class_option'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/generators/base.rb:202:in `class_option'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/generators/app_base.rb:71:in `add_shared_options_for'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/generators/rails/app/app_generator.rb:160:in `<class:AppGenerator>'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/generators/rails/app/app_generator.rb:159:in `<module:Generators>'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/generators/rails/app/app_generator.rb:153:in `<module:Rails>'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/generators/rails/app/app_generator.rb:3:in `<top (required)>'
    from /home/umesh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
    from /home/umesh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/commands/application.rb:2:in `<top (required)>'
    from /home/umesh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
    from /home/umesh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/lib/rails/cli.rb:14:in `<top (required)>'
    from /home/umesh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
    from /home/umesh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:68:in `require'
    from /home/umesh/.rvm/gems/ruby-2.3.1/gems/railties-4.2.6/bin/rails:9:in `<top (required)>'
    from /home/umesh/.rvm/gems/ruby-2.3.1/bin/rails:23:in `load'
    from /home/umesh/.rvm/gems/ruby-2.3.1/bin/rails:23:in `<main>'
    from /home/umesh/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval'
    from /home/umesh/.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>'
umesh@umesh-Lenovo-G570:~/work/practice$ 

Answer 1

您使用的雷神gem的版本有问题。

有关更多信息，请查看here。这个问题是重复的。