Hello there, I have a piece of code that write text-to-speech audios into local files. However it stopped working since iOS 16. I have checked a similar post and can confirm there is a strong reference to the instance of AVSpeechSynthesizer across the app lifecycle. This looks like a regression in AVFoundation for iOS 16. Could someone take a look and help? let utterance = AVSpeechUtterance(string: text.text) utterance.voice = AVSpeechSynthesisVoice(language: text.languageCode) let soundDir = try FileManager.default.soundDir() let fileURL = text.fileURL(baseURL: soundDir) var avFile: AVAudioFile? self.avSpeechSynthesizer.write(utterance) { (buffer: AVAudioBuffer) in //This closure is never called in iOS 16 guard let pcmBuffer = buffer as? AVAudioPCMBuffer else {     fatalError("unknown buffer type: \(buffer)")   }    if pcmBuffer.frameLength != 0 {        if avFile == nil {             avFile = try? AVAudioFile(                   forWriting: fileURL,                   settings: pcmBuffer.format.settings,                   commonFormat: .pcmFormatInt16,                   interleaved: false                 )         }         try? avFile?.write(from: pcmBuffer)     } } The Xcode console output that might be relevant: 2022-09-17 14:57:44.732219-0700 CueTimer[38975:1142525] [AXTTSCommon] File did not exist at content path: (null) (null). Attempting to fallback to default voice for language: (null) 2022-09-17 14:57:44.741347-0700 CueTimer[38975:1142480] [catalog] Unable to list voice folder 2022-09-17 14:57:44.757943-0700 CueTimer[38975:1142480] [catalog] Unable to list voice folder 2022-09-17 14:57:44.761232-0700 CueTimer[38975:1142480] [catalog] Unable to list voice folder 2022-09-17 14:57:44.772778-0700 CueTimer[38975:1142480] [catalog] Unable to list voice folder 2022-09-17 14:57:44.799620-0700 CueTimer[38975:1142525] [AXTTSCommon] Error: Unable to speak. No speech service: voice: (null) identifier: (null), language: (null), resource: (null)