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

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at oracle.jdbc.driver.ScrollableResultSet.getCachedDatumValueAt(
at oracle.jdbc.driver.ScrollableResultSet.getOracleObject(
at oracle.jdbc.driver.ScrollableResultSet.getLong(
at com.solarmetric.datasource.ResultSetWrapper.getLong(
at com.solarmetric.kodo.impl.jdbc.schema.dict.AbstractDictionary.longFromSQL(
at com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.getObjectId(
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.createFromResultSet(
at com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager$2.getResultObject(
at com.solarmetric.kodo.impl.jdbc.runtime.LazyResultList.instantiateRow(
at com.solarmetric.kodo.impl.jdbc.runtime.LazyResultList.get(
at de.tolina.kontodispo.logic.MainController.processClassificationsAll(

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