Filebeat Logstash "Invalid version of beats protocol: 69" error

I am hosting the logstash in EC2. And filebeat is running on my windows environment.

I consistently see this error in the logs.

And what is tripping me is that filebeats is able to send to logstash.

There is no loadbalancer in front of the logstash.

[2021-05-28T00:28:26,894][INFO ][][filebeat_logstash_pipe][filebeat_logstash_5] [local:, remote:] Handling exception: Invalid version of beats protocol: 69
[2021-05-28T00:28:26,897][WARN ][][filebeat_logstash_pipe][filebeat_logstash_5] An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
 io.netty.handler.codec.DecoderException: Invalid version of beats protocol: 69

Please try this: Beats can not connect to Logstash

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