Fatal error: Uncaught Error: Class "FPDF" not found in D:\xampp\htdocs\ssw_doc\vendor\setasign\fpdi\fpdi_bridge.php:23 Stack trace: #0 D:\xampp\htdocs\ssw_doc\vendor\setasign\fpdi\fpdf_tpl.php(12): require_once() #1 {main} thrown in D:\xampp\htdocs\ssw_doc\vendor\setasign\fpdi\fpdi_bridge.php on line 23