title: PDF generation with TCPDF in Yii2
body: <p>I installed these packages: "hbalkhi/yii2-pdf": "dev-master" and "setasign/fpdi-tcpdf": "1.6.2". And now I am trying to generate example pdf file as it is shown here:
  <a href="https://packagist.org/packages/hbalkhi/yii2-pdf" rel="nofollow noreferrer">https://packagist.org/packages/hbalkhi/yii2-pdf</a>  </p>
  
  <p>Unfortunately, all I was able to get looks like: <a href="https://i.stack.imgur.com/ytTO9.png" rel="nofollow noreferrer">screenshot</a>
  How do I fix it?</p>