Fatal error: Uncaught Error: Class "TCPDF" not found in C:\Apache24\htdocs\cms_upgrade\vendor\setasign\fpdi\src\Tcpdf\Fpdi.php:33 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\setasign\fpdi\src\Tcpdf\Fpdi.php on line 33