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我尝试安装这个 dashing 小部件，但在运行时出现以下错误dashing start

/var/lib/gems/1.9.1/gems/dashing-1.3.1/lib/dashing.rb:26:in `block (2 levels) in <top (required)>': undefined method `history' for Sinatra::Application:Class (NoMethodError)

因此，我删除了这个新小部件的所有方面（它在 /widgets 目录中的文件夹、它的作业 .rb 文件和 .erb 文件中的代码）。但是，此错误仍然存​​在，我什至无法启动仪表板。这对我来说是个大问题。有人可以帮我吗？

编辑：

完整的错误是

/var/lib/gems/1.9.1/gems/dashing-1.3.1/lib/dashing.rb:26:in `block (2 levels) in <top (required)>': undefined method `history' for Sinatra::Application:Class (NoMethodError)
        from /var/lib/gems/1.9.1/gems/dashing-1.3.1/lib/dashing.rb:25:in `open'
        from /var/lib/gems/1.9.1/gems/dashing-1.3.1/lib/dashing.rb:25:in `block in <top (required)>'
/usr/lib/ruby/1.9.1/psych.rb:203:in `parse': (history.yml): control characters are not allowed at line 1 column 1 (Psych::SyntaxError)
        from /usr/lib/ruby/1.9.1/psych.rb:203:in `parse_stream'
        from /usr/lib/ruby/1.9.1/psych.rb:151:in `parse'
        from /usr/lib/ruby/1.9.1/psych.rb:127:in `load'
        from /usr/lib/ruby/1.9.1/psych.rb:297:in `block in load_file'
        from /usr/lib/ruby/1.9.1/psych.rb:297:in `open'
        from /usr/lib/ruby/1.9.1/psych.rb:297:in `load_file'
        from /var/lib/gems/1.9.1/gems/dashing-1.3.1/lib/dashing.rb:31:in `<top (required)>'
        from config.ru:2:in `require'
        from config.ru:2:in `block in <main>'
        from /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
        from /var/lib/gems/1.9.1/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
        from config.ru:1:in `new'
        from config.ru:1:in `<main>'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/lib/rack/adapter/loader.rb:33:in `eval'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/lib/rack/adapter/loader.rb:33:in `load'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/lib/thin/controllers/controller.rb:182:in `load_rackup_config'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/lib/thin/controllers/controller.rb:72:in `start'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/lib/thin/runner.rb:200:in `run_command'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/lib/thin/runner.rb:156:in `run!'
        from /var/lib/gems/1.9.1/gems/thin-1.6.1/bin/thin:6:in `<top (required)>'
        from /usr/local/bin/thin:23:in `load'
        from /usr/local/bin/thin:23:in `<main>'
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1 回答 1

1

我通过重命名旧的历史文件解决了这个问题

mv history.yml history

然后重新启动服务器。在我的情况下

rackup -p 3030 -s puma

直到我停止服务器后，history.yml 文件才重新出现。我用nano检查了它，它充满了数据。抱歉，我无法解释为什么会发生这种情况。服务器详细信息。Ubuntu 13.10 32 位桌面

于 2013-12-20T14:56:58.423 回答