Connector return value exception: com.thoughtworks.xstream.mapper.CannotResolveClassException

Hi @all

Env: Win7-32Bit/Bonita BPM Community Edition 6.5.0/Java 8

I created a connector which calls a service class that uses JPA to query the DB and returns a POJO. When I test the connector, querying the DB (with usage of persistence.xml) works ok, but when connector is closed (or whatever is its state within the BPM) and the result ist returned I get the following exception: