Please teach me How to save PDF files to amazon S3

[Christopher Jones]

Nice to meet you.

Please teach me How to save  PDF files to amazon S3.

I wan't when I click the button on the website, a PDF will be created and to save it to S3.

But PDF is not created and becomes nil.

If  don't save to S3, "send_data pdf.render" can be done without any problem.

```contoller

class UsersController < ApplicationController

  @event = Event.find(params[:event_id])

  pdf = CreatePdf.new(@supporters,@event)

  @event.update(

    pdf_S3:pdf  #using carrierwave

  )

end

```

```create_pdf.rb

class CreatePdf < Prawn::Document

  def initialize(supporters, event)

    super(

    page_size: 'A4',

    top_margin: 40,

    bottom_margin: 30,

    left_margin: 50,

    right_margin: 50

      )

  end

 #others

end

` ` `  

```development environment

ruby '2.7.1'

rails '5.2.5'

prawn '2.4.0'

I am in great trouble.

help me please.