I wrote a little function for a text2speech function for my app. the code works fine until ios16. now I see the following console logs:

```
022-09-13 18:04:02.274692+0200 Blindzeln_Prototyp[47358:164517] [asset] Failed to get sandbox extensions
2022-09-13 18:04:02.314956+0200 Blindzeln_Prototyp[47358:164517] [catalog] Query for com.apple.MobileAsset.VoiceServicesVocalizerVoice failed: 2
2022-09-13 18:04:02.315688+0200 Blindzeln_Prototyp[47358:164517] [catalog] Unable to list voice folder
2022-09-13 18:04:02.333665+0200 Blindzeln_Prototyp[47358:164517] [catalog] Query for com.apple.MobileAsset.VoiceServices.GryphonVoice failed: 2
2022-09-13 18:04:02.334239+0200 Blindzeln_Prototyp[47358:164517] [catalog] Unable to list voice folder
2022-09-13 18:04:02.338622+0200 Blindzeln_Prototyp[47358:164517] [catalog] Unable to list voice folder
2022-09-13 18:04:02.355732+0200 Blindzeln_Prototyp[47358:164583] [AXTTSCommon] File did not exist at content path: (null) (null). Attempting to fallback to default voice for language: (null)
2022-09-13 18:04:02.420342+0200 Blindzeln_Prototyp[47358:164583] [AXTTSCommon] Error: Unable to speak. No speech service: voice: (null) identifier: (null), language: (null), resource: (null)

```

here's the simple code:

```
import Foundation
import AVFoundation

func sayIt(text2speech: String) {
    let utterance = AVSpeechUtterance(string: String(text2speech))
    utterance.voice = AVSpeechSynthesisVoice(language: "de-DE")
    utterance.rate = 0.5

    let synthesizer = AVSpeechSynthesizer()
    synthesizer.speak(utterance)
}

```

any hints?