unicorn 이 `parse': (<unknown>): mapping values are not allowed in this context at line 22 column 11 (Psych::SyntaxError) 문제로 실행이 안될 때 아래 문서 참고. http://stackoverflow.com/questions/4980877/rails-error-couldnt-parse-yaml

unicorn.log

/home/daul/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/psych.rb:203:in `parse': (<unknown>): mapping values are not allowed in this context at line 22 column 11 (Psych::SyntaxError)
  from /home/daul/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/psych.rb:203:in `parse_stream'
	from /home/daul/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/psych.rb:151:in `parse'
	from /home/daul/.rbenv/versions/1.9.3-p392/lib/ruby/1.9.1/psych.rb:127:in `load'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application/configuration.rb:115:in `database_configuration'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.12/lib/active_record/railtie.rb:78:in `block (2 levels) in <class:Railtie>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:42:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activerecord-3.2.12/lib/active_record/base.rb:720:in `<top (required)>'
	from /home/daul/repang/releases/20130513130430/app/models/event.rb:1:in `<top (required)>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `require'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `block in require'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `require'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:359:in `require_or_load'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:502:in `load_missing_constant'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:192:in `block in const_missing'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:190:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:190:in `const_missing'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:514:in `load_missing_constant'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:192:in `block in const_missing'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:190:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:190:in `const_missing'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/inflector/methods.rb:230:in `block in constantize'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/inflector/methods.rb:229:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/inflector/methods.rb:229:in `constantize'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/inflector/methods.rb:260:in `safe_constantize'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/core_ext/string/inflections.rb:66:in `safe_constantize'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_controller/metal/params_wrapper.rb:152:in `_default_wrap_model'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_controller/metal/params_wrapper.rb:169:in `_set_wrapper_defaults'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_controller/metal/params_wrapper.rb:133:in `inherited'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/abstract_controller/railties/routes_helpers.rb:7:in `block (2 levels) in with'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/actionpack-3.2.12/lib/action_controller/railties/paths.rb:7:in `block (2 levels) in with'
	from /home/daul/repang/releases/20130513130430/app/controllers/admin/events_controller.rb:1:in `<top (required)>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `require'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `block in require'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in `load_dependency'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in `require'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:359:in `require_or_load'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:313:in `depend_on'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:225:in `require_dependency'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:439:in `block (2 levels) in eager_load!'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:438:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:438:in `block in eager_load!'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:436:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/engine.rb:436:in `eager_load!'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application/finisher.rb:53:in `block in <module:Finisher>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `instance_exec'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:30:in `run'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:55:in `block in run_initializers'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `each'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/initializable.rb:54:in `run_initializers'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/application.rb:136:in `initialize!'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/railties-3.2.12/lib/rails/railtie/configurable.rb:30:in `method_missing'
	from /home/daul/repang/releases/20130513130430/config/environment.rb:5:in `<top (required)>'
	from config.ru:4:in `require'
	from config.ru:4:in `block in <main>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
	from config.ru:1:in `new'
	from config.ru:1:in `<main>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn.rb:44:in `eval'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn.rb:44:in `block in builder'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:722:in `call'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:722:in `build_app!'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:595:in `init_worker_process'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:615:in `worker_loop'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:500:in `spawn_missing_workers'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:511:in `maintain_worker_count'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/lib/unicorn/http_server.rb:277:in `join'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/gems/unicorn-4.6.2/bin/unicorn:126:in `<top (required)>'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/bin/unicorn:23:in `load'
	from /home/daul/repang/shared/bundle/ruby/1.9.1/bin/unicorn:23:in `<main>'