my $borrowernumber = $input->param('borrowernumber');
my $patron = Koha::Patrons->find($borrowernumber);
+if ( $borrowernumber and not $patron ) {
+ output_and_exit( $input, $cookie, $template, 'unknown_patron' );
+}
+
if ( C4::Context->preference('SMSSendDriver') eq 'Email' ) {
my @providers = Koha::SMS::Providers->search();
$template->param( sms_providers => \@providers );