An uncaught Exception was encountered Type: Mpdf\MpdfException

General Discussion
1

Hi, After years of usage I suddenly get this error today.
Filename: /home/triomarketers/public_html/invoice/vendor/mpdf/mpdf/src/Mpdf.php
What could be the problem?
Version 1.6.3 running php 8.1
Where do I start?
Thanks