Fatal error: Uncaught Error: Class 'FPDI' not found in C:\Apache24\htdocs\PortalUIS_bkp\libs\PDFMerge\fpdi\FPDI_Protection.php:18 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\PortalUIS_bkp\libs\PDFMerge\fpdi\FPDI_Protection.php on line 18