class Devise::FailureApp

def i18n_message(default = nil)
  message = warden_message || default || :unauthenticated
  if message.is_a?(Symbol)
    options = {}
    options[:resource_name] = scope
    options[:scope] = "devise.failure"
    options[:default] = [message]
    auth_keys = scope_class.authentication_keys
    keys = (auth_keys.respond_to?(:keys) ? auth_keys.keys : auth_keys).map { |key| scope_class.human_attribute_name(key) }
    options[:authentication_keys] = keys.join(I18n.t(:"support.array.words_connector"))
    options = i18n_options(options)
    I18n.t(:"#{scope}.#{message}", **options)
  else
    message.to_s
  end
end