No audio when answering phone calls using Twilio

When I call a number, it rings for them but when they pick up, we can't hear each other.

I get this in my logs:

🎤 Audio Route Changed: AVAudioSessionRouteChangeReason(rawValue: 3)

❌ Error handling route change: Error Domain=NSOSStatusErrorDomain Code=1701737535 "Session activation failed"

what does that code actually mean?

No audio when answering phone calls using Twilio
 
 
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