Errors help: Kibana error: Shard Failures FetchPhaseExecutionException

Hi all,
New to elastic search. Have setup a cluster of three and have kibana running. Keep getting this error any ideas?

Shard Failures
The following shard failures ocurred:

Index: logstash-2016.06.01 Shard: 0 Reason: FetchPhaseExecutionException[[logstash-2016.06.01][0]: query[filtered(ConstantScore(BooleanFilter(+cache(@timestamp:[1464733190236 TO 1464776390236]))))->cache(org.elasticsearch.index.search.nested.NonNestedDocsFilter@5c88f6d4)],from[0],size[500],sort[<custom:"@timestamp": org.elasticsearch.index.fielddata.fieldcomparator.LongValuesComparatorSource@605471dc>!]: Fetch Failed [Failed to highlight field [messageTemplate.raw]]]; nested: RuntimeException[org.apache.lucene.util.BytesRefHash$MaxBytesLengthExceededException: bytes can be at most 32766 in length; got 351038]; nested: MaxBytesLengthExceededException[bytes can be at most 32766 in length; got 351038];
Index: logstash-2016.06.01 Shard: 3 Reason: RemoteTransportException[[Asp][inet[/172.26.27.165:9300]][indices:data/read/search[phase/fetch/id]]]; nested: FetchPhaseExecutionException[[logstash-2016.06.01][3]: query[filtered(ConstantScore(BooleanFilter(+cache(@timestamp:[1464733190236 TO 1464776390236]))))->cache(org.elasticsearch.index.search.nested.NonNestedDocsFilter@cec73a06)],from[0],size[500],sort[<custom:"@timestamp": org.elasticsearch.index.fielddata.fieldcomparator.LongValuesComparatorSource@5a6167c7>!]: Fetch Failed [Failed to highlight field [messageTemplate.raw]]]; nested: RuntimeException[org.apache.lucene.util.BytesRefHash$MaxBytesLengthExceededException: bytes can be at most 32766 in length; got 40851]; nested: MaxBytesLengthExceededException[bytes can be at most 32766 in length; got 40851];
Index: logstash-2016.06.01 Shard: 4 Reason: RemoteTransportException[[Asp][inet[/172.26.27.165:9300]][indices:data/read/search[phase/fetch/id]]]; nested: FetchPhaseExecutionException[[logstash-2016.06.01][4]: query[filtered(ConstantScore(BooleanFilter(+cache(@timestamp:[1464733190236 TO 1464776390236]))))->cache(org.elasticsearch.index.search.nested.NonNestedDocsFilter@cec73a06)],from[0],size[500],sort[<custom:"@timestamp": org.elasticsearch.index.fielddata.fieldcomparator.LongValuesComparatorSource@524f7ce0>!]: Fetch Failed [Failed to highlight field [messageTemplate.raw]]]; nested: RuntimeException[org.apache.lucene.util.BytesRefHash$MaxBytesLengthExceededException: bytes can be at most 32766 in length; got 351081]; nested: MaxBytesLengthExceededException[bytes can be at most 32766 in length; got 351081];

The issue is that the messageTemplate.raw is too large - bytes can be at most 32766 in length; got 351038.

What are you trying to do in KB?

So one of my login entries is too large in size?