log_error

# File actionpack/lib/action_dispatch/middleware/debug_exceptions.rb, line 159
      def log_error(request, wrapper)
        logger = logger(request)
        return unless logger

        exception = wrapper.exception

        trace = wrapper.application_trace
        trace = wrapper.framework_trace if trace.empty?

        ActiveSupport::Deprecation.silence do
          logger.fatal "  "
          logger.fatal "#{exception.class} (#{exception.message}):"
          log_array logger, exception.annoted_source_code if exception.respond_to?(:annoted_source_code)
          logger.fatal "  "
          log_array logger, trace
        end
      end