CSV export problem column line delimiter

Hello !
At each update of the plugin, we must repeat the manipulation on the following file:
I add delimiter…

/www/wp-content/plugins/contact-form-cfdb7/inc
> export-csv.php

– public function array2csv(array &$array, $df){
$delimiter = ‘;’;
if (count($array) == 0) {
return null;
}
– fputcsv( $df, $heading, $delimiter );
– fputcsv($df, $line_values, $delimiter);`

Otherwise the export is completely distorted because all the information is put on the same line… Do you have an explanation for this?

Hope you can help me 🙂
Best regards,

Romain