Fatal error: Uncaught Error: Call to undefined method FPDF::FPDF() in C:\wamp64\www\pdf\PDF_Label.php:83 Stack trace: #0 C:\wamp64\www\pdf\ex.php(11): PDF_Label->PDF_Label(Array) #1 {main} thrown in C:\wamp64\www\pdf\PDF_Label.php on line 83