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Unable to generate QR Code using POS Print Utility

sender.PrintBarcode(getQR(), 0, 0, 'QRCODE', 2);

FieldValue[1] := 'Scan this QR code to give us feedback';

sender.PrintLine(Tray, sender.FormatLine(sender.FormatStr(FieldValue, DSTR1), false, false, false, false));

NodeName[1] := 'Feedback Message';

sender.AddPrintLine(250, 1, NodeName, FieldValue, DSTR1, false, false, false, false, Tray);

The getQR method is:

local procedure getQR(): Text

var

Base64Convert: Codeunit "Base64 Convert";

TempBlob: Codeunit "Temp Blob";

Client: HttpClient;

Response: HttpResponseMessage;

Instr: InStream;

URL: Text;

TypeHelper: Codeunit "Type Helper";

begin

URL := 'https://....';

Client.Get('barcode.tec-it.com/barcode.ashx' + TypeHelper.UrlEncode(URL) + '&code=QRCode', Response);

TempBlob.CreateInStream(Instr);

Response.Content().ReadAs(Instr);

EncodeStr := Base64Convert.ToBase64(Instr);

exit(URL);

end;

I'm not able to generate QR Code. By using the print Barcode method from POS PRINT Utility codeunit. I've called the method from event OnBeforePrintKotLine. And I want to print the QR Code in Kot.

I tried saving QR image by downloading it from online websites and use PrintBitmap instead of PrintBarcode. But that didn't work. Can anyone help me with this. I also don't have ID Automation License.

PS: The sender refer to "LSC Print POS Utility" Codeunit.

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