Hello Community, I am using DHIS2 2.31 to carrying out a bulk import of tracked entities using KAFKA integration, However, I keep getting the following error in the DHIS2 logs. Kindly advise on what the issue might be. Many thanks.
> * INFO 2021-03-13 13:08:25,020 'system-process' create org.hisp.dhis.message.MessageConversation, name: Job 'Kafka Tracker Consume' failed, uid: r86vwrps8D4 (AuditLogUtil.java [taskScheduler-20])
> * INFO 2021-03-13 13:08:25,023 no recipient (SmsMessageSender.java [taskScheduler-17])
> * ERROR 2021-03-13 13:08:25,029 Job 'Kafka Tracker Consume' failed (DefaultJobInstance.java [taskScheduler-20])
> java.lang.NullPointerException: element cannot be mapped to a null key
> at java.util.Objects.requireNonNull(Unknown Source)
> at java.util.stream.Collectors.lambda$groupingBy$45(Unknown Source)
> at java.util.stream.ReduceOps$3ReducingSink.accept(Unknown Source)
> at java.util.Iterator.forEachRemaining(Unknown Source)
> at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Unknown Source)
> at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
> at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
> at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
> at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
> at java.util.stream.ReferencePipeline.collect(Unknown Source)
> at org.hisp.dhis.dxf2.events.kafka.DefaultTrackerKafkaManager.consumeTrackedEntities(DefaultTrackerKafkaManager.java:393)