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java.lang.ArrayIndexOutOfBoundsException: 0	at org.springframework.data.util.ParameterizedTypeInformation.getComponentType(ParameterizedTypeInformation.java:147)	at org.springframework.data.util.TypeDiscoverer.getActualType(TypeDiscoverer.java:292)	at org.springframework.data.util.ParentTypeAwareTypeInformation.getActualType(ParentTypeAwareTypeInformation.java:29)	at org.springframework.data.mapping.model.AbstractPersistentProperty.getPersistentEntityType(AbstractPersistentProperty.java:125)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.createAndRegisterProperty(AbstractMappingContext.java:469)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.doWith(AbstractMappingContext.java:427)	at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:572)	at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:295)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.createAndRegisterProperty(AbstractMappingContext.java:470)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.doWith(AbstractMappingContext.java:427)	at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:572)	at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:295)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.createAndRegisterProperty(AbstractMappingContext.java:470)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.doWith(AbstractMappingContext.java:427)	at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:572)	at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:295)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.createAndRegisterProperty(AbstractMappingContext.java:470)	at org.springframework.data.mapping.context.AbstractMappingContext$PersistentPropertyCreator.doWith(AbstractMappingContext.java:427)	at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:572)	at org.springframework.data.mapping.context.AbstractMappingContext.addPersistentEntity(AbstractMappingContext.java:295)	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:181)	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:141)	at org.springframework.data.mapping.context.AbstractMappingContext.getPersistentEntity(AbstractMappingContext.java:67)	at org.springframework.data.mongodb.core.MongoTemplate.getPersistentEntity(MongoTemplate.java:1831)	at org.springframework.data.mongodb.core.MongoTemplate.save(MongoTemplate.java:829)