Fatal error: Uncaught Error: Class 'FPDF' not found in C:\laragon4\www\CodigosQR\vendor\iio\libmergepdf\tcpdi\fpdf_tpl.php:20 Stack trace: #0 {main} thrown in C:\laragon4\www\CodigosQR\vendor\iio\libmergepdf\tcpdi\fpdf_tpl.php on line 20