    # File lib/chef/knife.rb, line 398
        def humanize_exception(e)
          case e
          when SystemExit
            raise # make sure exit passes through.
          when Net::HTTPServerException, Net::HTTPFatalError
            humanize_http_exception(e)
          when Errno::ECONNREFUSED, Timeout::Error, Errno::ETIMEDOUT, SocketError
            ui.error "Network Error: #{e.message}"
            ui.info "Check your knife configuration and network settings"
          when NameError, NoMethodError
            ui.error "knife encountered an unexpected error"
            ui.info  "This may be a bug in the '#{self.class.common_name}' knife command or plugin"
            ui.info  "Please collect the output of this command with the `-VV` option before filing a bug report."
            ui.info  "Exception: #{e.class.name}: #{e.message}"
          when Chef::Exceptions::PrivateKeyMissing
            ui.error "Your private key could not be loaded from #{api_key}"
            ui.info  "Check your configuration file and ensure that your private key is readable"
          else
            ui.error "#{e.class.name}: #{e.message}"
          end
        end