Hello,
Is your datasource loaded in a script ? (Load in script = true). If yes, change it to false.
Did you edited the query (on the datasource) ? If no, you have to select fields, and most of the time the dimension "Distinct", before any other dim in the query panel.
Just a question, why do you use a universe ? DS is able to connect natively to Hana, and without all the limitation of the universes ... (5000 rows or 50.000 cells max).