Resources for Xamarin for Android NotFoundException ZXingNetMobile

Question

I am trying to use ZXingNetMobile to scan a QR code on Android, but I am getting this error:

This is the function I use:

public async Task<string> ScanQrCode() { var scanner = new ZXing.Mobile.MobileBarcodeScanner(); var result = await scanner.Scan(); return result.Text; } 

And this is my configuration:

EDIT

Here is my package.config: