java.lang.NullPointerException: This exception has no message.

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This exception has no message.
java.lang.NullPointerException:
at com.solarmetric.kodo.impl.jdbc.ormapping.SubclassProviderImpl.getType(SubclassProviderImpl.java:122)
at com.solarmetric.kodo.impl.jdbc.ormapping.SubclassProviderImpl.getType(SubclassProviderImpl.java:96)
at com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.loadPrimaryMappings(ClassMapping.java:1034)
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.initialize(JDBCStoreManager.java:249)
at com.solarmetric.kodo.runtime.StateManagerImpl.loadInitialState(StateManagerImpl.java:174)
at com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectByIdFilter(PersistenceManagerImpl.java:1023)
at com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:942)
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.createFromResultSet(JDBCStoreManager.java:762)
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager$2.getResultObject(JDBCStoreManager.java:717)
at com.solarmetric.kodo.runtime.objectprovider.EagerResultList.(EagerResultList.java:35)
at com.solarmetric.kodo.impl.jdbc.runtime.ResultListFactory.createResultList(ResultListFactory.java:75)
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.executeQuery(JDBCStoreManager.java:709)

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