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I get a `cannot open camera "0" without camera permission` Error when I try to open a camera to scan a QR code

I get a cannot open camera "0" without camera permission Error when I try to open a camera to scan a QR code.

I have a QR code scanner function that does not open the camera. The scanner screen appears but I do not see the box with the line inside for scanning.

I have also added camera permissions in the Android manifest

Android Manifest Permissions

 <uses-permission android:name="android.permission.CAMERA"/>
    <uses-feature android:name="android.hardware.camera"
        android:required="false"/>
    <uses-feature android:name="android.hardware.camera.autofocus" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
The Scanner Function is below
Future <void> scanqr() async {
      final qrCode = await scanner.scan();
        setState(() {
          this.qrCode = qrCode;
//use permission_handler package and use the below code.. it will work fine
Future <void> scanqr() async {
          await Permission.camera.request();
          final qrCode = await scanner.scan();
            setState(() {
              this.qrCode = qrCode;
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– Community
                Jan 19, 2022 at 10:31
        
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