PostgreSQL pushdown query SELECT COUNT(*) FROM BQT1.SmallA - producing NullPointerException

SELECT COUNT FROM xxxxxxxxxx is producing Java Null Pointer Exceptions in PostgreSQL pushdown. Log attached.

Examples:

SELECT COUNT FROM BQT1.SmallA
SELECT COUNT FROM BQT1.MediumA
SELECT COUNT FROM BQT1.LargeA
SELECT COUNT FROM BQT2.SmallB
SELECT COUNT FROM BQT2.MediumB