I'm trying to get a JS StopTimeUpdate object from the GTFS Realtime feed using the gtfs-realtime.proto with these variables:

const nsBuilder = ProtoBuf.loadProtoFile("/Users/kameronbaylor/mta-alexa-skill/gtfs-realtime.proto");
const nstrDecoder = nsBuilder.build("transit_realtime").TripUpdate.StopTimeUpdate;

but I get this error:

Illegal wire type for field Message.Field .transit_realtime.TripUpdate.StopTimeUpdate.stop_sequence: 2 (0 expected) undefined