не пишет нито нито, сразу ошибку

Fatal error: Uncaught exception 'PDFlibException' with message 'Metrics data for font 'Arial' not found' in C:\xampp\htdocs\pdf.php:7 Stack trace: #0 C:\xampp\htdocs\pdf.php(7): pdf_findfont() #1 {main} thrown in C:\xampp\htdocs\pdf.php on line 7