Manifest.permission unresolved reference error solution in Android studio ContextCompat.checkSelfPermission

The code that automatically detects permissions in the code reports an error: permission in Manifes, reports unresolved reference: permission error

The correct code is as follows:

if(ContextCompat.checkSelfPermission(this,android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
    ActivityCompat.requestPermissions(this,arrayOf(android.Manifest.permisson.READ_EXTERNAL_STORAGE),0)
}