Prawn::Errors::IncompatibleStringEncoding: Your document includes text that's not compatible with the Windows-1252 character set : <p>Below is my Prawn PDF file to generate a name on the PDF - </p>

<pre><code>def initialize(opportunity_application)
  pdf = Prawn::Document.new(:page_size =&gt; [1536, 2048], :page_layout =&gt; :landscape)
  cell_1 = pdf.make_cell(content: "Eylül Çamcı".force_encoding('iso-8859-1').encode('utf-8'), borders: [], size: 66, :text_color =&gt; "000000", padding: [0,0,0,700], font: "app/assets/fonts/opensans.ttf")

  t = pdf.make_table [[cell_1]]
  t.draw
  pdf.render_file "tmp/mos_certificates/application_test.pdf"
end
</code></pre>

<p>When rendering the name Eylül Çamcı which is Turkish, I get the following error - </p>

<pre><code>Prawn::Errors::IncompatibleStringEncoding: Your document includes text that's not compatible with the Windows-1252 character set.
If you need full UTF-8 support, use TTF fonts instead of PDF's built-in fonts.
</code></pre>

<p>I'm already using a TTF font that supports the characters in that name, what can I do to print the name correctly?</p>
