I’m working with scala Play application. Aerospike is used as a storage for high load system. I’ve written the code that save and load plenty of data in LDT (LargeList). When running tests everything works just fine. When to call the same methods from the application (from Play Action, which process user request or from Play’s Global object), then I recive Error Code -1: java.lang.ClassNotFoundException: models.Aero.FileEntry, where the last is my model’s case class. What is the reason of such strange behaviour? How can I fix it? Exception arises when calling llist.scan or llist.find. The same code in tests - everything ok.