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

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java.lang.NullPointerException:
at java.io.StringReader.(StringReader.java:33)
at oracle.toplink.essentials.internal.parsing.ejbql.antlr273.EJBQLParserBuilder.buildParser(EJBQLParserBuilder.java:61)
at oracle.toplink.essentials.internal.parsing.ejbql.EJBQLParser.buildParserFor(EJBQLParser.java:149)
at oracle.toplink.essentials.exceptions.EJBQLException.generalParsingException(EJBQLException.java:140)
at oracle.toplink.essentials.internal.parsing.ejbql.EJBQLParser.buildParserFor(EJBQLParser.java:155)
at oracle.toplink.essentials.internal.parsing.ejbql.EJBQLParser.buildParseTree(EJBQLParser.java:126)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:215)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:189)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:153)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.(EJBQueryImpl.java:114)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.(EJBQueryImpl.java:99)
at oracle.toplink.essentials.internal.ejb.cmp3.EJBQueryImpl.(EJBQueryImpl.java:86)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerImpl.createQuery(EntityManagerImpl.java:204)

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