Filebeat not able to connect to the Elsaticsearch

Hello,

Having an issue with the opendistro setup, the beats are reaching to the Elasticsearch nginx proxy but not delivered to the Elasticsearch, for the ES log I get the following error,

2019-09-12T06:01:15,216][INFO ][c.a.o.j.s.JobSweeper     ] [hostname] Running full sweep
[2019-09-12T06:01:25,364][WARN ][c.a.o.s.a.BackendRegistry] [hostname] Authentication finally failed for beats from 127.0.0.1:39214
[2019-09-12T06:02:03,406][INFO ][stats_log                ] [hostname] ------------------------------------------------------------------------
Program=PerformanceAnalyzerPlugin
StartTime=1568282463.399
EndTime=Thu, 12 Sep 2019 06:02:03 EDT
Time=60007 msecs
Timing=total-time:60007.0/1
Counters=TotalError=24,NetworkCollectionError=24
EOE

Thanks in advance.