java.lang.RuntimeException: com.fasterxml.jackson.core.JsonGenerationException: Null key for a Map not allowed in JSON (use a converting NullKeySerializer?)

Stack Overflow | puru020 | 7 months ago
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    Root Cause Analysis

    1. java.lang.RuntimeException

      com.fasterxml.jackson.core.JsonGenerationException: Null key for a Map not allowed in JSON (use a converting NullKeySerializer?)

      at org.neo4j.ogm.drivers.embedded.request.EmbeddedRequest.executeRequest()
    2. org.neo4j.ogm
      Neo4jSession.save
      1. org.neo4j.ogm.drivers.embedded.request.EmbeddedRequest.executeRequest(EmbeddedRequest.java:181)
      2. org.neo4j.ogm.drivers.embedded.request.EmbeddedRequest.execute(EmbeddedRequest.java:88)
      3. org.neo4j.ogm.session.request.RequestExecutor.executeSave(RequestExecutor.java:88)
      4. org.neo4j.ogm.session.delegates.SaveDelegate.save(SaveDelegate.java:85)
      5. org.neo4j.ogm.session.delegates.SaveDelegate.save(SaveDelegate.java:44)
      6. org.neo4j.ogm.session.Neo4jSession.save(Neo4jSession.java:419)
      6 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:497)
      4 frames
    4. Spring AOP
      JdkDynamicAopProxy.invoke
      1. org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
      2. org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
      3. org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
      4. org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
      5. org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
      6. org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
      7. org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
      7 frames
    5. com.sun.proxy
      $Proxy100.save
      1. com.sun.proxy.$Proxy100.save(Unknown Source)
      1 frame
    6. Spring Data Neo4j
      Neo4jTemplate.save
      1. org.springframework.data.neo4j.template.Neo4jTemplate.save(Neo4jTemplate.java:203)
      1 frame
    7. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:497)
      4 frames
    8. Spring AOP
      ReflectiveMethodInvocation.proceed
      1. org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
      2. org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
      3. org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
      3 frames
    9. Spring Tx
      PersistenceExceptionTranslationInterceptor.invoke
      1. org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
      1 frame