I'm developing a React Native application with the usage of React Native TTS package for text to speech functionality. After upgrading to XCode 15 and IOS 17, I've encountered on the issue that produces the same errors as described here. My "Samantha" voice id was unable to speak after the update and I followed some steps here that produced exactly the same outputs in my case (switching to Fred worked but it didn't solve my case because I need female voice). I've used simulators with the IOS 17.0 system. Today I've upgraded my Iphone SE (2nd generation) to IOS 17.0.2 and I tested it and it was all working as before! So in my case it seems that testing the functionality on XCode 15 simulators with IOS 17.0 was unsuccessful, and I got success when testing it on the real device with the latest IOS system version (17.0.2), which seems to resolvee this issue at least in my case. So I suggest anyone to try it on a real device with the system version higher than IOS 17.0. Cheers!