Fatal error: Uncaught Error: Class 'FPDF' not found in C:\isanto\web\titan_84\www\adds\visor_certificado\libs\mpdf\mpdf_6\vendor\setasign\fpdi\fpdi_bridge.php:23 Stack trace: #0 C:\isanto\web\titan_84\www\adds\visor_certificado\libs\mpdf\mpdf_6\vendor\setasign\fpdi\fpdf_tpl.php(12): require_once() #1 {main} thrown in C:\isanto\web\titan_84\www\adds\visor_certificado\libs\mpdf\mpdf_6\vendor\setasign\fpdi\fpdi_bridge.php on line 23