Explorer for ArcGIS (Android) returns the error message, "Unable to Open Map, Invalid response" when opening a mobile map package containing a vector tile package with point features that have labels and unique values symbology.

Workaround

1. Add the feature class twice.
2. Configure the first feature class to use a single symbol symbology and labels.
3. Set the symbology to No Color and no border so it is invisible.
4. Use the unique values symbology for the second feature class.

Steps to Reproduce