thrown in /home/devspedi/public_html/wp-content/themes/additrans/lib/php-barcode-generator/src/BarcodeGenerator.php on line 140

[rux2]

i have this piece of code :
require_once get_template_directory().'/lib/php-barcode-generator/src/BarcodeGenerator.php';
require_once get_template_directory().'/lib/php-barcode-generator/src/BarcodeGeneratorHTML.php';

add_action( 'woocommerce_email_order_meta', 'aggiungi_codice_a_barre_email_conferma_ordine', 10, 3 );
function aggiungi_codice_a_barre_email_conferma_ordine( $order, $sent_to_admin, $plain_text ) {
$string = $order->get_order_number(); // Utilizza il numero dell'ordine come stringa per generare il codice a barre
$bar_code= genera_codice_a_barre( $stringa ); // Genera il codice a barre
$colli = $_POST['peso_colli'];
for ($i = 0; $i < count($colli); $i++){
if ($colli[$i]){
$stringa_per_codice_a_barre = $POST['codice_collo'.$i];
echo '

Bar code

';
echo $bar_code;
}
}
}
function genera_codice_a_barre( $string ) {
$generator = new Picqer\Barcode\BarcodeGeneratorHTML();
$bar_code= $generator->getBarcode($string, $generator::TYPE_CODE_39);
// Restituisci il codice a barre HTML
return $bar_code;
}
that generates the error : thrown in /home/devspedi/public_html/wp-content/themes/additrans/lib/php-barcode-generator/src/BarcodeGenerator.php on line 113.

[casperbakker]

Without the error itself and the value in $string, I cannot start to debug this.