Critical error when trying to list voices?

[Nickersoft]

Hey man, awesome library. Everything was going awesome till I upgraded to RN 0.50, then suddenly my app crashes whenever I call the voices() method. I checked my logs and found the following:

Exception '-[AVSpeechSynthesisVoice identifier]: unrecognized selector sent to instance 0x7ffc1d4c3ff0' was thrown while invoking voices on target TextToSpeech with params (
	    6746,
	    6747
	)
	callstack: (
		0   CoreFoundation                      0x000000010d676f35 __exceptionPreprocess + 165
		1   libobjc.A.dylib                     0x000000010c7d2bb7 objc_exception_throw + 45
		2   CoreFoundation                      0x000000010d67e04d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
		3   CoreFoundation                      0x000000010d5d627c ___forwarding___ + 988
		4   CoreFoundation                      0x000000010d5d5e18 _CF_forwarding_prep_0 + 120
		5   Linguistic                          0x000000010be3d61c -[TextToSpeech voices:reject:] + 476
		6   CoreFoundation                      0x000000010d56ec8c __invoking___ + 140
		7   CoreFoundation                      0x000000010d56eae2 -[NSInvocation invoke] + 290
		8   CoreFoundation                      0x000000010d5fded6 -[NSInvocation invokeWithTarget:] + 54
		9   Linguistic                          0x000000010bca4c0c -[RCTModuleMethod invokeWithBridge:module:arguments:] + 2796
		10  Linguistic                          0x000000010bd3b582 _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicE + 786
		11  Linguistic                          0x000000010bd3b0af _ZZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEiENK3$_0clEv + 127
		12  Linguistic                          0x000000010bd3b029 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 25
		13  libdispatch.dylib                   0x000000011045aaf6 _dispatch_call_block_and_release + 12
		14  libdispatch.dylib                   0x0000000110474af4 _dispatch_client_callout + 8
		15  libdispatch.dylib                   0x000000011045f8cf _dispatch_queue_drain + 733
		16  libdispatch.dylib                   0x000000011045f494 _dispatch_queue_invoke + 217
		17  libdispatch.dylib                   0x00000001104613fa _dispatch_root_queue_drain + 479
		18  libdispatch.dylib                   0x00000001104622c9 _dispatch_worker_thread3 + 98
		19  libsystem_pthread.dylib             0x00000001107e71ca _pthread_wqthread + 1387
		20  libsystem_pthread.dylib             0x00000001107e6c4d start_wqthread + 13
	)

which, from the looks of things, is coming from this line:

[voices addObject:@{@"id": voice.identifier, @"name": voice.name, @"language": voice.language}];

It seems like it can't find identifier as a property of the voice object, despite it being listed in the official docs. I'd try to fix it myself, but seeing it deals with native code I'm not even sure where I'd begin debugging it. Any idea what might be responsible for it?

[EricPKerr]

@Nickersoft @ak1394 have you been able to resolve this? Seeing this show up in crashlytics as well.

I'm on RN: 0.53.3 and react-native-tts: 1.5.1