Fatal error: Uncaught Error: Using $this when not in object context in /var/www/zeiss.org/api/shared/libs/mpdf60/config_fonts-distr-without-OTL.php:17 Stack trace: #0 {main} thrown in /var/www/zeiss.org/api/shared/libs/mpdf60/config_fonts-distr-without-OTL.php on line 17