my $totppng = "data:image/png;base64, " .
encode_base64(GD::Barcode::QRcode->new($totpurl,
{ ModuleSize => 10 })->plot->png);
my $totppng = "data:image/png;base64, " .
encode_base64(GD::Barcode::QRcode->new($totpurl,
{ ModuleSize => 10 })->plot->png);