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

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This exception has no message.
at com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCExpressionFactory.(
at com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.getExpressionFactory(
at com.techtrader.modules.jdo.query.QueryImpl.getExpression(
at com.techtrader.modules.jdo.impl.jdbc.runtime.JDBCQuery.getExpression(
at com.techtrader.modules.jdo.query.QueryImpl.executeWithMap(
at com.techtrader.modules.jdo.query.QueryImpl.execute(
at com.bridgecanada.dao.StateTest.testSelect(

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