ruby-on-rails - ruby / ruby -2.0.0-p0/lib/ruby/2.0.0/psych.rb :205:in `parse' : (): could not find expected ':' while scanning a simple key at line 18 column 3

Question

这是我在做一个简单的事情时遇到的完整错误:
$ rails generate

Users/localuser/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/psych.rb:205:in `parse': (): could not find expected ':' while scanning a simple key at line 18 column 3(Psych::SyntaxError)

任何想法是怎么回事？

我的系统:

ruby 2.0.0p0 [x86_64-darwin12.2.0] Rails 3.2.13 mysql Ver 14.14
分发 5.6.10，用于 osx10.8 (x86_64)

这是错误中提到的 psych.rb 文件的摘录

#See Psych::Nodes for more information about YAML AST.
def self.parse_stream yaml, filename = nil, &block
  if block_given?
    parser = Psych::Parser.new(Handlers::DocumentStream.new(&block))
    parser.parse yaml, filename
  else
    parser = self.parser
    parser.parse yaml, filename
    parser.handler.root
  end
end

Answer 1

如果您的 YAML 文件中有语法错误，通常会出现此错误。