您好我一直试图访问我的heroku应用程序，但它一直给我应用程序错误。
附件是我的heroku日志。
2014-07-30T05:52:12.995412+00:00 heroku[web.1]: State changed from starting to crashed
2014-07-30T05:52:13.734720+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=vast-fortress-4470.herokuapp.com request_id=43cec375-c96a-46c2-adcf-c0a37fb3801e fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:52:14.507679+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=vast-fortress-4470.herokuapp.com request_id=86ff6b8e-61f0-4ea8-b0e2-022989592a32 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:52:14.584623+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=vast-fortress-4470.herokuapp.com request_id=ac5f2cb0-a1f7-4015-8990-6725b82c4f05 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:52:21.245102+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/homr" host=vast-fortress-4470.herokuapp.com request_id=52c4c51f-2f3d-4254-8f9a-675988896758 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:52:21.843978+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=vast-fortress-4470.herokuapp.com request_id=431135aa-9731-4d1d-81d3-cb254e269ae0 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:52:23.903377+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/home" host=vast-fortress-4470.herokuapp.com request_id=bfcc489f-1fab-4c3d-ad7a-1b367755dfc7 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:52:24.521571+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=vast-fortress-4470.herokuapp.com request_id=3c145744-7509-4356-850c-5b5002cad995 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:53:29.438004+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/home" host=vast-fortress-4470.herokuapp.com request_id=52240698-37ae-4b3f-9ded-90f7f382304c fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
2014-07-30T05:53:30.303500+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=vast-fortress-4470.herokuapp.com request_id=2d436bbf-3384-4820-ba28-259f15185294 fwd="192.122.131.10" dyno= connect= service= status=503 bytes=
这是我的heroku run rails console：
Running `rails console` attached to terminal... up, run.2353
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.8/lib/active_record/dynamic_matchers.rb:22:in `method_missing': undefined method `dump_schema_after_migration=' for #<Class:0x007f1af45e9f00> (NoMethodError)
from /app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.8/lib/active_record/railtie.rb:166:in `block (3 levels) in <class:Railtie>'
from /app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.8/lib/active_record/railtie.rb:165:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.8/lib/active_record/railtie.rb:165:in `block (2 levels) in <class:Railtie>'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/lazy_load_hooks.rb:45:in `block in run_load_hooks'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/lazy_load_hooks.rb:44:in `each'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/lazy_load_hooks.rb:44:in `run_load_hooks'
from /app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.8/lib/active_record/base.rb:322:in `<module:ActiveRecord>'
from /app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.8/lib/active_record/base.rb:22:in `<top (required)>'
from /app/app/models/documents.rb:1:in `<top (required)>'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:229:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:229:in `block in require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:214:in `load_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:229:in `require'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:330:in `require_or_load'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:289:in `depend_on'
from /app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.8/lib/active_support/dependencies.rb:207:in `require_dependency'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.8/lib/rails/engine.rb:465:in `block (2 levels) in eager_load!'
from /app/vendor/bundle/ruby/2.0.0/gems/railties-4.0.8/lib/rails/engine.rb:464:in `each'
任何人都可以对此有所了解吗？