Hi

I am using spring mongorepository, in that i am trying to fetch all records
using public List<Appointment> findByPatient(User user);

but it giving an error like

org.apache.catalina.core.ApplicationDispatcher.invoke Servlet.service() for servlet application-context threw exception
java.lang.StackOverflowError
at java.util.TreeMap.keyIterator(TreeMap.java:1018)
at java.util.TreeMap$KeySet.iterator(TreeMap.java:1031)
at java.util.TreeSet.iterator(TreeSet.java:181)
at java.util.Collections$UnmodifiableCollection$1.<init>(Collections.java:1064)
at java.util.Collections$UnmodifiableCollection.iterator(Collections.java:1063)
at com.mongodb.ClusterDescription.getServersByPredicate(ClusterDescription.java:205)
at com.mongodb.ClusterDescription.getAny(ClusterDescription.java:127)
at com.mongodb.AnyServerSelector.choose(AnyServerSelector.java:8)
at com.mongodb.BaseCluster.getServer(BaseCluster.java:63)
at com.mongodb.DBTCPConnector.getServer(DBTCPConnector.java:654)
at com.mongodb.DBTCPConnector.access$300(DBTCPConnector.java:39)
at com.mongodb.DBTCPConnector$MyPort.getConnection(DBTCPConnector.java:503)
at com.mongodb.DBTCPConnector$MyPort.get(DBTCPConnector.java:451)
at com.mongodb.DBTCPConnector.innerCall(DBTCPConnector.java:286)
at com.mongodb.DBTCPConnector.call(DBTCPConnector.java:271)
at com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:84)
at com.mongodb.DBCollectionImpl.find(DBCollectionImpl.java:66)
at com.mongodb.DBCollection.findOne(DBCollection.java:869)
at com.mongodb.DBCollection.findOne(DBCollection.java:843)
at com.mongodb.DBCollection.findOne(DBCollection.java:801)
at com.mongodb.DBCollection.findOne(DBCollection.java:381)
at com.mongodb.DBCollection.findOne(DBCollection.java:366)
at com.mongodb.DBRefBase.fetch(DBRefBase.java:68)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readRef(MappingMongoConverter.java:1128)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readCollectionOrArray(MappingMongoConverter.java:836)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readValue(MappingMongoConverter.java:1113)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter.access$100(MappingMongoConverter.java:77)
at org.springframework.data.mongodb.core.convert.MappingMongoConverter$MongoDbPropertyValueProvider.getPropertyValue(MappingMongoConverter.java:1064)