What is the main root cause...
DEBUG [203:StdOutHandler [/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.252.b09-2.el7_8.x86_64/jre/bin/java]] 2021-02-15 20:35:33,851 ERROR [async-dispatch-15] [synchrony.http] pong timeout
Hard to say from a snippet of log without any context.
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