Fatal error: Uncaught Error: Class 'tFPDF' not found in C:\xampp\htdocs\admin\vendor\setasign\fpdi\src\Tfpdf\FpdfTpl.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\setasign\fpdi\src\Tfpdf\FpdfTpl.php on line 20