Ruby on rails Heroku log what'；这是我的错误吗？

当我部署到heroku时，我一直在试图找出错误是什么-我得到错误：

如果您是应用程序所有者，请查看日志以了解更多信息。

在heroku上。当我检查日志时，这是我的输出：

2014-12-04T19:11:39.601769+00:00 heroku[api]: Enable Logplex by ***@gmail.com
2014-12-04T19:11:39.601769+00:00 heroku[api]: Release v2 created by ***@gmail.com
2014-12-04T19:13:04.540163+00:00 heroku[api]: Release v3 created by **@gmail.com
2014-12-04T19:13:04.540163+00:00 heroku[api]: Set LANG, RAILS_ENV, RACK_ENV, SECRET_KEY_BASE config vars by **@gmail.com
2014-12-04T19:13:05.567740+00:00 heroku[api]: Set DATABASE_URL config vars by **@gmail.com
2014-12-04T19:13:05.567772+00:00 heroku[api]: Release v4 created by **@gmail.com
2014-12-04T19:13:05.646074+00:00 heroku[api]: Attach HEROKU_POSTGRESQL_IVORY resource by **@gmail.com
2014-12-04T19:13:05.646104+00:00 heroku[api]: Release v5 created by **@gmail.com
2014-12-04T19:13:06.061846+00:00 heroku[api]: Scale to web=1 by **@gmail.com
2014-12-04T19:13:06.164666+00:00 heroku[api]: Release v6 created by **@gmail.com
2014-12-04T19:13:06.164619+00:00 heroku[api]: Deploy 8dabf8a by **@gmail.com
2014-12-04T19:13:12.044424+00:00 heroku[web.1]: Starting process with command `bin/rails server -p 3629 -e production`
2014-12-04T19:13:15.049430+00:00 app[web.1]: [2014-12-04 19:13:15] INFO  WEBrick 1.3.1
2014-12-04T19:13:15.049452+00:00 app[web.1]: [2014-12-04 19:13:15] INFO  ruby 2.0.0 (2014-11-13) [x86_64-linux]
2014-12-04T19:13:15.049770+00:00 app[web.1]: [2014-12-04 19:13:15] INFO  WEBrick::HTTPServer#start: pid=2 port=3629
2014-12-04T19:13:15.467086+00:00 heroku[web.1]: State changed from starting to up
2014-12-04T19:13:45.069127+00:00 heroku[router]: at=info method=GET path="/" host=infinite-sands-2102.herokuapp.com request_id=22e2e81b-39d4-4d63-9a30-b0b2c99aedc3 fwd="122.161.16.112" dyno=web.1 connect=3ms service=322ms status=500 bytes=1754
2014-12-04T19:13:45.878115+00:00 heroku[router]: at=info method=GET path="/favicon.ico" host=infinite-sands-2102.herokuapp.com request_id=8f5605ee-e29f-447a-a788-f553ab2f2ddb fwd="122.161.16.112" dyno=web.1 connect=1ms service=13ms status=404 bytes=1829

---

因此，在最后两行中，状态从500变为404，但该站点在本地呈现得非常完美，但我可以在heroku上的“/”上看到500，然后是404，这可能是什么问题？谢谢

Heroku日志只是说你的应用程序在“/”根路径上产生了500个错误，并且公共目录中没有favicon.ico（404，找不到文件）

也许您必须首先设置Rails 4登录到标准输出（以便Heroku可以打印它们）

---

谢谢！在我试过这该死的东西后，我的思路变得更清晰了！