Fatal error: Uncaught ArithmeticError: Bit shift by negative number in D:\xampp-7\htdocs\gestmaj\tcpdf\include\barcodes\pdf417.php:747 Stack trace: #0 D:\xampp-7\htdocs\gestmaj\tcpdf\include\barcodes\pdf417.php(589): PDF417->getErrorCorrectionLevel(-1, 14) #1 D:\xampp-7\htdocs\gestmaj\tcpdf\tcpdf_barcodes_2d.php(289): PDF417->__construct('http://www.tcpd...', -1, 2, Array) #2 D:\xampp-7\htdocs\gestmaj\tcpdf\tcpdf_barcodes_2d.php(69): TCPDF2DBarcode->setBarcode('http://www.tcpd...', 'PDF417') #3 D:\xampp-7\htdocs\gestmaj\tcpdf\examples\barcodes\example_2d_pdf417_svg.php(46): TCPDF2DBarcode->__construct('http://www.tcpd...', 'PDF417') #4 {main} thrown in D:\xampp-7\htdocs\gestmaj\tcpdf\include\barcodes\pdf417.php on line 747