<Projection fails with InstantiationException afte...

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Projection fails with InstantiationException after Hibernate 6 migration
After the migration to Quarkus 3.14 and Hibernate 6, custom query projections stopped working.
I have many more examples but all comes to this exception and combination of a custom query and an aggregate class projection.
The exception I get:
org.hibernate.InstantiationException: Cannot instantiate query result type 'xx.domain.UnitDetails' due to: xx.domain.BusinessUnitDetails.(java.lang.String,xx.domain.BusinessUnitType,java.lang.Integer)

at...