$mail->{subject} = $data->{config}->email_subject;
$mail->{message} = $data->{config}->email_body;
$mail->{attachments} = [{
- filename => $pdf_file_name,
+ path => $pdf_file_name,
name => sprintf('%s %s.pdf', $::locale->text('Invoice'), $data->{invoice}->invnumber),
}];