Error Can't Scan QR Code

I get this error Access denied finding property "vendor.camera.aux.packagelist"

this is my code

import android.Manifest import android.content.pm.PackageManager import android.os.Bundle import android.util.Log import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import androidx.core.app.ActivityCompat import androidx.core.content.ContextCompat import androidx.fragment.app.Fragment import com.google.zxing.Result import me.dm7.barcodescanner.zxing.ZXingScannerView

class QRFragment : Fragment(), ZXingScannerView.ResultHandler {

private lateinit var mScannerView: ZXingScannerView

override fun onCreateView(
    inflater: LayoutInflater, container: ViewGroup?,
    savedInstanceState: Bundle?
): View? {
    // Inflate the layout for this fragment

// return inflater.inflate(R.layout.fragment_qr, container, false) mScannerView = ZXingScannerView(context) return mScannerView }

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    if(context?.let { ContextCompat.checkSelfPermission(it, Manifest.permission.CAMERA) } !=
        PackageManager.PERMISSION_GRANTED){
        activity?.let {
            ActivityCompat.requestPermissions(
                it, arrayOf(Manifest.permission.CAMERA) ,
                50)
        }
    }
}

override fun onResume() {
    super.onResume()
    mScannerView.startCamera()
}

override fun handleResult(rawResult: Result?) {
    Log.v("AW", rawResult?.getText()); // Prints scan results
    Log.v("AW", rawResult?.getBarcodeFormat().toString());
}

}

dm77 / barcodescanner

Error Can't Scan QR Code #502