红宝石
在服务器启动时发生奇怪的错误，请查看日志
umair-2:game-minion umairejaz$ rails server
/Library/Ruby/Gems/1.8/gems/railties-3.1.0.rc5/lib/rails/script_rails_loader.rb:11: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
/Library/Ruby/Gems/1.8/gems/bundler-1.0.15/lib/bundler/runtime.rb:136: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
Could not load SystemTimer >= v1.2.0. Falling back to timeout.rb. SystemTimer is STRONGLY recommended for timeouts in Ruby 1.8.7. See http://ph7spot.com/blog/system-timer-1-2-release for details.
=> Booting WEBrick
=> Rails 3.0.7 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/yaml.rb:133:in `load': syntax error on line 1, col 24: ` allow_dynamic_fields: true' (ArgumentError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/yaml.rb:133:in `load'
from /Library/Ruby/Gems/1.8/gems/mongoid-2.0.0.beta.20/lib/mongoid/railtie.rb:53
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/initializable.rb:25:in `instance_exec'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/initializable.rb:25:in `run'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/initializable.rb:50:in `run_initializers'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/initializable.rb:49:in `each'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/initializable.rb:49:in `run_initializers'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/application.rb:134:in `initialize!'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/application.rb:77:in `send'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.7/lib/rails/application.rb:77:in `method_missing'
from /Users/umairejaz/Projects/game-minion/config/environment.rb:5
from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:239:in `require'
from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:239:in `require'
from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in `load_dependency'
from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:596:in `new_constants_in'
from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:225:in `load_dependency'
from /Library/Ruby/Gems/1.8/gems/activesupport-3.0.7/lib/active_support/dependencies.rb:239:in `require'
from /Users/umairejaz/Projects/game-minion/config.ru:3
from /Library/Ruby/Gems/1.8/gems/rack-1.2.3/lib/rack/builder.rb:46:in `instance_eval'
from /Library/Ruby/Gems/1.8/gems/rack-1.2.3/lib/rack/builder.rb:46:in `initialize'
from /Users/umairejaz/Projects/game-minion/config.ru:1:in `new'
from /Users/umairejaz/Projects/game-minion/config.ru:1
检查config文件夹下的任何YAML文件，特别是其中包含allow_dynamic_fields设置的文件。 这可能是上面，下面或特定线路上的错误。 删除任何无关的空格并重新格式化（即使用制表符或空格，而不是两者）。 检查是否有其他混乱或无关的关键字。
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