Warning: Trying to access array offset on value of type null in D:\inetpub\webs\campionandoalivornoit\fpdf\tutorial\class.php on line 21

Warning: Trying to access array offset on value of type null in D:\inetpub\webs\campionandoalivornoit\fpdf\tutorial\class.php on line 62

Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in D:\inetpub\webs\campionandoalivornoit\fpdf\tutorial\class.php:62 Stack trace: #0 D:\inetpub\webs\campionandoalivornoit\fpdf\tutorial\class.php(217): PDF->LoadData() #1 {main} thrown in D:\inetpub\webs\campionandoalivornoit\fpdf\tutorial\class.php on line 62