PercolateQueryBuilder Error! while trying to upgrade ES-2.4 to ES-5.6

[Sunkanmi_Olaleye]

//org.elasticsearch.transport.RemoteTransportException: [Kj5tcUf][127.0.0.1:9300][indices:data/read/search[phase/query]]
Caused by: org.elasticsearch.index.query.QueryShardException: field [query] does not exist
at org.elasticsearch.percolator.PercolateQueryBuilder.doToQuery(PercolateQueryBuilder.java:443) ~[?:?]
at org.elasticsearch.index.query.AbstractQueryBuilder.toQuery(AbstractQueryBuilder.java:96) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.AbstractQueryBuilder.toFilter(AbstractQueryBuilder.java:118) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.BoolQueryBuilder.addBooleanClauses(BoolQueryBuilder.java:448) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.BoolQueryBuilder.doToQuery(BoolQueryBuilder.java:421) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.AbstractQueryBuilder.toQuery(AbstractQueryBuilder.java:96) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.QueryShardContext.lambda$toQuery$1(QueryShardContext.java:313) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.QueryShardContext.toQuery(QueryShardContext.java:325) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.index.query.QueryShardContext.toQuery(QueryShardContext.java:312) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.search.SearchService.parseSource(SearchService.java:617) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.search.SearchService.createContext(SearchService.java:485) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.search.SearchService.createAndPutContext(SearchService.java:461) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.search.SearchService.executeQueryPhase(SearchService.java:257) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.action.search.SearchTransportService$6.messageReceived(SearchTransportService.java:343) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.action.search.SearchTransportService$6.messageReceived(SearchTransportService.java:340) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.transport.RequestHandlerRegistry.processMessageReceived(RequestHandlerRegistry.java:69) ~[elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.transport.TransportService$7.doRun(TransportService.java:654) [elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:674) [elasticsearch-5.6.9.jar:5.6.9]
at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-5.6.9.jar:5.6.9]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]