"Expression can not be null" when using Functions

[gabriel-rajadurai]

Using function expressions such as "count", "max" , etc. throws an exception saying "Expression can not be null"

This is the select statement I used, SelectResult.expression(Functions.count(Expression.string("*"))).as("count")

I tried other Functions such as "avg", "max" , etc. , but I got the same exception.

Note: I tested this on an Android Emulator running API-29