我在 Heroku 上有一个我不经常访问的 Rails 应用程序。当我今天访问它时，我收到了标准的 Rails 错误消息
We're sorry, but something went wrong.
我跑去heroku logs试图找出问题所在，但日志没有说明任何可以解释错误的内容（对我来说）。
在这种情况下你会怎么做？
2013-11-04T22:52:07.048102+00:00 app[web.1]: Processing by PostsController#index as HTML
2013-11-04T22:52:07.132891+00:00 app[web.1]: Rendered posts/_post.html.erb (13.2ms)
2013-11-04T22:52:07.133396+00:00 app[web.1]: Rendered posts/_post.html.erb (0.3ms)
2013-11-04T22:52:07.146333+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.147977+00:00 app[web.1]: Rendered posts/_post.html.erb (0.3ms)
2013-11-04T22:52:07.148485+00:00 app[web.1]: Rendered posts/_post.html.erb (0.4ms)
2013-11-04T22:52:07.151556+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.175334+00:00 app[web.1]: Rendered posts/_post.html.erb (12.5ms)
2013-11-04T22:52:07.183576+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.188420+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.212161+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.212742+00:00 app[web.1]: Rendered posts/_post.html.erb (0.4ms)
2013-11-04T22:52:07.226959+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.246992+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.243411+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.296351+00:00 app[web.1]: Rendered posts/_post.html.erb (0.5ms)
2013-11-04T22:52:07.297843+00:00 app[web.1]: Rendered shared/_analytics.html.erb (0.0ms)
2013-11-04T22:52:07.308385+00:00 app[web.1]: Rendered posts/_total.html.erb (0.7ms)
2013-11-04T22:52:07.399532+00:00 app[web.1]: Rendered posts/index.html.erb within layouts/application (311.6ms)
2013-11-04T22:52:07.399720+00:00 app[web.1]: Completed in 351ms
2013-11-04T22:52:07.398061+00:00 app[web.1]: Rendered shared/_stats.html.erb (44.1ms)
2013-11-04T22:52:07.429348+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.1ms)
2013-11-04T22:52:07.429836+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_session.text.erb (0.3ms)
2013-11-04T22:52:07.428209+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_request.text.erb (1.3ms)
2013-11-04T22:52:07.430004+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.0ms)
2013-11-04T22:52:07.737679+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_backtrace.text.erb (0.2ms)
2013-11-04T22:52:07.733934+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_environment.text.erb (303.5ms)
2013-11-04T22:52:07.734305+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.1ms)
2013-11-04T22:52:07.741156+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/exception_notification.text.erb (314.7ms)
2013-11-04T22:52:07.740339+00:00 app[web.1]: Rendered vendor/plugins/exception_notification/lib/exception_notifier/views/exception_notifier/_title.text.erb (0.1ms)
2013-11-04T22:52:07.842689+00:00 app[web.1]: Sent mail to myemail@gmail.com (67ms)
2013-11-04T22:52:07.842689+00:00 app[web.1]: