undefined method `otp_code_token' for #<User:0x00005611ff730138>
Did you mean?  otp_code

Showing /home/davidnghk/App6/fc4s/code/app/views/devise/registrations/edit.html.erb where line #91 raised:

undefined method `dark?' for #<RQRCode::QRCode:0x00007f8f111d7200>


                  <tr>
                    <% qr.modules.each_index do |y| %>
                        <% if qr.dark?(x,y) %>
                            <td class="black"/>
                        <% else %>
                            <td class="white"/>

  def show
    respond_to do |format|
      format.html {}
      format.pdf do
        html = render_to_string(
          template: 'sales/show.pdf.erb', 
          page_size: 'A4',
          margin: { bottom: 25 },
          footer: {
            content: render_to_string('shared/footer')
          }
          layout: 'layouts/application.pdf.erb')
        pdf = WickedPdf.new.pdf_from_string(html)
        send_data(pdf, filename: "sale-#{@sale.our_ref}.pdf", type: 'application/pdf', 
          disposition: :attachment)
      end
    end
  end