Datamatrix creation generate Notice: Undefined offset: [n_row]

[MrGabriCavi]

Hi,
during the generation of datamatrix code in FPDF istance the execution trig an notice error of undefined offset.
The datamatrix generated seems doesn't have any problem under read with an 2Dbarcode scanner.
I attach the code above

require_once('fpdf17/efpdf.php'); //FPDF with TextWithRotation method
require_once('php-barcode.php'); // The class :-)

$type = 'datamatrix';
$black = '000000';
$height = null;
$width = 0.7;
$angle = 0;

$pdf = new eFPDF();
$pdf->AddPage();

$x_barcode = 123;
$y_barcode = 49;

$barcode_string = "LYDAGAAVVISLTP0141002000158";

$codice = array('code'=>$barcode_string,'rect' => true);

$datamatrix = Barcode::fpdf($pdf, $black, $x_barcode , $y_barcode, $angle, $type, $codice , $width, $height);

$pdf->SetFont('Arial','',3);
$pdf->TextWithRotation($datamatrix['p4']['x'] + 1, $datamatrix['p4']['y'] + 2, $datamatrix['hri'], 0,0);

$pdf->Output("test.pdf");

Thanks for your attention

Gabri

[AlphaOneWhiskeyFour]

#17