Fatal error: Uncaught Error: Class 'FPDF' not found in C:\dolibarr\www\lev-up\vendor\setasign\fpdi\src\FpdfTpl.php:18 Stack trace: #0 {main} thrown in C:\dolibarr\www\lev-up\vendor\setasign\fpdi\src\FpdfTpl.php on line 18