$s12SwiftAudioEx20AVPlayerItemObserverC14startObserving4itemySo0dE0CtFyyScMYccfU
AVPlayerItemObserver.swift, line 76
SIGABRT: *** -[AVPlayerItem addOutput:] Cannot attach an output that is already attached or nil output
I just tried your example code and was unable to reproduce this with the iOS sample app. You might try a more recent commit; I notice your line numbers are different than what's in the code.
AppCenter Crash Log
$s12SwiftAudioEx20AVPlayerItemObserverC14startObserving4itemySo0dE0CtFyyScMYccfU AVPlayerItemObserver.swift, line 76 SIGABRT: *** -[AVPlayerItem addOutput:] Cannot attach an output that is already attached or nil output
Describe the bug Use Cases
Smartphone: