We use Ionic 5 with Capacitor 3, using the latest iOS version which **supports** getUserMedia for capacitor scheme.

getUserMedia **does** work for me, but once i've implemented the CallKit provider, i get:

```
NotReadableError: The I/O read operation failed

```

Whenever I answer the call. We've tried deactivating the AudioSession using

```
audioSession.setActive(false)

```

inside all these methods:

```
provider(_ provider: CXProvider, didActivate audioSession: AVAudioSession)
provider(_ provider: CXProvider, perform action: CXAnswerCallAction)
pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void)

```

Both nothing helps. Is there a priority factor or do i need to do some interruptions?