Log4j2 with Graylog input

Development
3

I am trying to send log message to Graylog via Raw/Plaintext TCP input.
Log message is configured by Log4j2 under Spring boot application.
Sending log I prefer to use socket and using buffer size for wrap the message and send to the server only once time. Below is code suggestion from another source.

    <Socket name="socketAppender" host="<graylog host>" port="port">
              <SerializedLayout />
    </Socket>
    <Async name="async" bufferSize="500" includeLocation="false">
        <AppenderRef ref="socketAppender"/>
    </Async>

As now I am facing with log4j2 error sending to Graylog with not able to read in Web UI. Another is buffer size is working as expected.