Crash when downloading some languages

[shuvashish76]

Installed the app & downloaded some languages simultaneously, app crashed few times.

Logs:

FATAL EXCEPTION: main
Process: com.github.olga_yakovleva.rhvoice.android, PID: 11193
java.lang.IllegalArgumentException
	at com.github.olga_yakovleva.rhvoice.android.VoiceListAdapter.notifyVoiceItemChanged(VoiceListAdapter.java:184)
	at com.github.olga_yakovleva.rhvoice.android.AvailableVoicesFragment.refresh(AvailableVoicesFragment.java:127)
	at com.github.olga_yakovleva.rhvoice.android.AvailableVoicesFragment$1.onReceive(AvailableVoicesFragment.java:55)
	at androidx.localbroadcastmanager.content.LocalBroadcastManager.executePendingBroadcasts(LocalBroadcastManager.java:319)
	at androidx.localbroadcastmanager.content.LocalBroadcastManager$1.handleMessage(LocalBroadcastManager.java:127)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:193)
	at android.app.ActivityThread.main(ActivityThread.java:6718)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Device details:
Model : Lenovo TB-8704X
Android : 9
App version : 1.14.0 (114000)