EngineYard Rails 3 应用程序上出现 TypeError（没有为类 OpenSSL::Digest::Digest 定义 marshal_dump）
我们的应用程序在开发和测试中运行没有问题（所有 rspec 和 cucumber 测试都运行）。
但是，当部署到 EngineYard Cloud 时，我反复收到“我们很抱歉，但出了点问题”消息。
当我收到错误时，跟踪日志文件会告诉我页面已成功呈现，但有一个警告。
Completed 200 OK in 1833ms (Views: 28.1ms | ActiveRecord: 2.1ms)
TypeError (no marshal_dump is defined for class OpenSSL::Digest::Digest):
我看过一些关于 TypeError 的帖子，但似乎没有什么适合这种情况。
如果我能提供一些关于如何找出导致错误的原因的建议，我将不胜感激。
Our app runs without issue in development and test (all rspec and cucumber tests run)
When deployed to EngineYard Cloud, however, I repeatedly get the "We're sorry, but something went wrong" message.
When I receive the error, tailing the log files tells me the page rendered successfully, with one caveat.
Completed 200 OK in 1833ms (Views: 28.1ms | ActiveRecord: 2.1ms)
TypeError (no marshal_dump is defined for class OpenSSL::Digest::Digest):
I have seen some postings on the TypeError, but nothing that seems to fit this situation.
I would be grateful for some suggestions on how I might track down what is causing the error.
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我发现了这个问题。我不小心在会话中存储了一个模型实例，并且该模型具有加密的值。
我现在正确地只存储模型的 id，并且问题已经减轻。
I found the issue. I was accidentally storing a model instance in session, and the model had encrypted values.
I am now, properly, only storing the id of the model, and the issue has abated.