title: Can not load custom font file `.otf` in Laravel-dompdf
body: <p>Currently I use <code>barryvdh/laravel-dompdf</code> for export pdf in Laravel 5.6, but I have problem about load custom font file.</p>
  
  <p>I can load font file had extension is <code>.ttf</code> by <code>php load_font.php</code>, it work perfect.</p>
  
  <p>But I can not use font file with extension is <code>.otf</code>, the <code>load_font.php</code> can work with this extension but can not use when export pdf.</p>
  
  <p>What did I wrong here, how can I embedded a font file with format is <code>.otf</code> when export PDF? I hope somebody had experience about this problem. Can you help me? thank you so much.</p>