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

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java.lang.NullPointerException:
at org.hibernate.mapping.Column.getCanonicalName(Column.java:352)
at com.blazebit.persistence.impl.hibernate.HibernateExtendedQuerySupport.getColumnTypes(HibernateExtendedQuerySupport.java:180)
at com.blazebit.persistence.impl.EntityMetamodelImpl.(EntityMetamodelImpl.java:89)
at com.blazebit.persistence.impl.CriteriaBuilderFactoryImpl.(CriteriaBuilderFactoryImpl.java:80)

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