我收到“在扫描下一个令牌时找不到任何令牌的字符”

Question

我已经在笔记本电脑上运行Ruby on Rails大约一个月了，但是当我想在这个实例中运行服务器时（几小时前工作正常）我现在收到此消息。我怎样才能让服务器再次运行？

C:\Sites\LaunchPage>rails s
    C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>):
    found character that cannot start any token while scanning for the next token at line 17 column 17 (Psych::SyntaxError)
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/psych.rb:203:in `parse_stream'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/psych.rb:151:in `parse'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/psych.rb:127:in `load'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/figaro-0.6.3/lib/figaro.rb:21:in `raw'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/figaro-0.6.3/lib/figaro.rb:17:in `env'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/figaro-0.6.3/lib/figaro/railtie.rb:7:in `block in <class:Railtie>'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.8/lib/active_support/lazy_load_hooks.rb:34:in `call'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.8/lib/active_support/lazy_load_hooks.rb:34:in `execute_hook'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.8/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.8/lib/active_support/lazy_load_hooks.rb:42:in `each'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-3.2.8/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/application.rb:67:in `inherited'
    from C:/Sites/LaunchPage/config/application.rb:13:in `<module:LaunchPage>'
    from C:/Sites/LaunchPage/config/application.rb:12:in `<top (required)>'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands.rb:53:in `require'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands.rb:53:in `block in <top (required)>'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands.rb:50:in `tap'
    from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Answer 1

YAML不接受缩进的TAB字符（\t）。在config/application.yml中查找并替换为2个空格。

（或者可能还有其他语法错误，正如Ryan所建议的那样。但我打赌这个）

Answer 2

此错误源自Figaro gem，这表明您可能在config/application.yml中出现语法错误。仔细检查此文件是否有任何错误的YAML语法。

Answer 3

我和你的问题一样。我确定它的TAB字符（\ t）问题。请更换2个空格。

Answer 4

可能不是您的具体示例，但Stack Overflow的标题导致我出现在此帖子中，因此对于使用此错误的人来说，可能是由于：

en.yml或翻译yml或任何yaml ...

字符串插值周围没有双引号

points:
  other: %{points} points

校正：

points:
  other: "%{points} points"

Answer 5

您应该检查包含YAML的所有重要配置文件。尝试rake db:seed时遇到了同样的错误，结果发现我在config/database.yml的评论区块中有TAB字符。

如果您不确定，请使用一些在线YAML解析器，即http://yaml-online-parser.appspot.com/。

Answer 6

当其中一个yaml文件出现语法错误“ yaml中没有选项卡”时，会发生此错误，yaml文件可能为database.yaml，application.yaml等。

Answer 7

[]

发展： DEV_DB_PASSWORD：“ qaz” 分期： STAG_DB_PASSWORD：“ qaz”

下一行中不应有空格