We are seeing a spike in Android users who are getting this error which crashes the app:
Attempt to invoke virtual method 'java.lang.String com.mapbox.navigator.VoiceInstruction.getSsmlAnnouncement()' on a null object reference
I think this is due to the Mapbox API not sending voice instructions.
It looks like this first started happening yesterday (19th August from 22:30 UTC to 23:36 UTC) and then again today (20th August since 07:44 UTC).