Ruby Mailer：错误的参数数量

wrong number of arguments (0 for 1)

叫我疯了,但我觉得我正确定义了一切：

控制器(为简洁而截断)：

def create
@cms484 = Cms484.new(cms484_params)

respond_to do |format|
  if @cms484.save
    SendLink.message(@cms484).deliver_later
    format.html { redirect_to cms484s_path,notice: 'Cms484 was successfully created.' }
    format.json { render :show,status: :created,location: @cms484 }
  else
    format.html { render :new }
    format.json { render json: @cms484.errors,status: :unprocessable_entity }
  end
end

SendLink.rb：

class SendLink < ApplicationMailer
    def message(cms484)
    @cms484 = cms484
    mail(
      :subject => 'Hello from Postmark',:to  => @cms484.recipient,:from => 'info@mysite.com',:html_body => '<strong>Hello</strong> user!.',end
end

任何人都能看到大海捞针还是我完全错过了其他东西？

如果重要的话,我正在使用Postmark进行交付,并根据文档在application.rb文件中定义了这些参数.认为这是一个更简单的问题.

编辑
完整的错误：

Completed 500 Internal Server Error in 76ms

ArgumentError (wrong number of arguments (0 for 1)):
  app/mailers/send_link.rb:2:in `message'
  app/mailers/send_link.rb:4:in `message'
  app/controllers/cms484s_controller.rb:38:in `block in create'
  app/controllers/cms484s_controller.rb:36:in `create'