Fatal error: Uncaught Error: Class 'FPDF' not found in C:\Apache24\htdocs\PortalUIS_bkp\libs\PDFMerge\tcpdf\fpdf_tpl.php:20 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\PortalUIS_bkp\libs\PDFMerge\tcpdf\fpdf_tpl.php on line 20