org.springframework.dao.InvalidDataAccessApiUsageException: [Assertion failed] - entity is required; it must not be null

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[Assertion failed] - entity is required; it must not be null
org.springframework.dao.InvalidDataAccessApiUsageException: [Assertion failed] - entity is required; it must not be null
at org.springframework.data.neo4j.support.ParameterCheck.notNull(ParameterCheck.java:26)
at org.springframework.data.neo4j.support.Neo4jTemplate.getPersistentState(Neo4jTemplate.java:217)
at org.springframework.data.neo4j.fieldaccess.OneToNRelationshipEntityFieldAccessorFactory$OneToNRelationshipEntityFieldAccessor.getState(OneToNRelationshipEntityFieldAccessorFactory.java:142)
at org.springframework.data.neo4j.fieldaccess.OneToNRelationshipEntityFieldAccessorFactory$OneToNRelationshipEntityFieldAccessor.createSetOfTargetNodes(OneToNRelationshipEntityFieldAccessorFactory.java:97)

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