stale_session_check!

# File actionpack/lib/action_dispatch/middleware/session/abstract_store.rb, line 56
      def stale_session_check!
        yield
      rescue ArgumentError => argument_error
        if argument_error.message =~ %{undefined class/module ([\w:]*\w)}
          begin
            # Note that the regexp does not allow $1 to end with a ':'
            $1.constantize
          rescue LoadError, NameError => const_error
            raise ActionDispatch::Session::SessionRestoreError,
              "Session contains objects whose class definition isn't available.\n" +
              "Remember to require the classes for all objects kept in the session.\n" +
              "(Original exception: #{const_error.message} [#{const_error.class}])\n"
          end
          retry
        else
          raise
        end
      end