Heroku でのフラスコの実行について簡単な質問がありました。何が間違っているのかわかりませんが、私は非常に新しいので、ばかげた間違いを許してください。
Flask を使用して Heroku にアプリをデプロイしています。実装の間違いを最小限に抑えるために、コードはhttps://github.com/orf/simpleから直接取得しました。このhttps://devcenter.heroku.com/articles/pythonに従うときに、いくつかの小さな調整を行いました。開発マシンで（python simple.pyを介して）実行するとプログラムは正常に動作しますが、プログラムはherokuで一貫した内部サーバーエラーに遭遇します。ログが添付されています。
何かご意見は？
2012-06-23T02:43:47+00:00 heroku[api]: Deploy 69a4995 by *********@gmail.com
2012-06-23T02:43:47+00:00 heroku[web.1]: State changed from up to bouncing
2012-06-23T02:43:47+00:00 heroku[web.1]: State changed from bouncing to created
2012-06-23T02:43:47+00:00 heroku[web.1]: State changed from created to starting
2012-06-23T02:43:47+00:00 heroku[slugc]: Slug compilation finished
2012-06-23T02:43:49+00:00 heroku[web.1]: Stopping all processes with SIGTERM
2012-06-23T02:43:49+00:00 heroku[web.1]: Starting process with command `gunicorn simple:app -b 0.0.0.0:25399 -w 3`
2012-06-23T02:43:49+00:00 app[web.1]: 2012-06-23 02:43:49 [5] [INFO] Worker exiting (pid: 5)
2012-06-23T02:43:49+00:00 app[web.1]: 2012-06-23 02:43:49 [7] [INFO] Worker exiting (pid: 7)
2012-06-23T02:43:49+00:00 app[web.1]: 2012-06-23 02:43:49 [2] [INFO] Handling signal: term
2012-06-23T02:43:49+00:00 app[web.1]: 2012-06-23 02:43:49 [6] [INFO] Worker exiting (pid: 6)
2012-06-23T02:43:49+00:00 app[web.1]: 2012-06-23 02:43:49 [2] [INFO] Shutting down: Master
2012-06-23T02:43:50+00:00 app[web.1]: 2012-06-23 02:43:50 [2] [INFO] Starting gunicorn 0.13.4
2012-06-23T02:43:50+00:00 app[web.1]: 2012-06-23 02:43:50 [2] [INFO] Listening at: http://0.0.0.0:25399 (2)
2012-06-23T02:43:50+00:00 app[web.1]: 2012-06-23 02:43:50 [2] [INFO] Using worker: sync
2012-06-23T02:43:50+00:00 app[web.1]: 2012-06-23 02:43:50 [6] [INFO] Booting worker with pid: 6
2012-06-23T02:43:50+00:00 app[web.1]: 2012-06-23 02:43:50 [5] [INFO] Booting worker with pid: 5
2012-06-23T02:43:50+00:00 app[web.1]: 2012-06-23 02:43:50 [7] [INFO] Booting worker with pid: 7
2012-06-23T02:43:50+00:00 heroku[web.1]: Process exited with status 0
2012-06-23T02:43:51+00:00 heroku[web.1]: State changed from starting to up
2012-06-23T02:45:00+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=21ms status=500 bytes=291
2012-06-23T02:45:01+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=14ms status=404 bytes=238
2012-06-23T02:45:01+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=3ms status=500 bytes=291
2012-06-23T02:45:01+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=15ms status=404 bytes=238
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=5ms status=500 bytes=291
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=2ms status=500 bytes=291
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=4ms status=500 bytes=291
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=3ms status=500 bytes=291
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=3ms status=500 bytes=291
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=5ms status=500 bytes=291
2012-06-23T02:45:02+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=2ms status=500 bytes=291
2012-06-23T02:45:03+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=2ms status=500 bytes=291
2012-06-23T02:45:03+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=4ms status=500 bytes=291
2012-06-23T02:45:03+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=4ms status=500 bytes=291
2012-06-23T02:45:03+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=2ms status=404 bytes=238
2012-06-23T02:45:32+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=2ms status=500 bytes=291
2012-06-23T02:45:32+00:00 heroku[router]: GET deep-rain-4577.herokuapp.com/favicon.ico dyno=web.1 queue=0 wait=0ms service=13ms status=404 bytes=238