Frequently getting connection lost

We are facing one issue in almost each and every meeting in our manually installed jitsi.

I am using
jitsi-videobridge2/stable,now 2.1-351-g0bfaac1c-1

Persons are getting connection lost
in the network monitor we are getting connection: lost while there is active network and network is quite strong, so there is no way to blame it to the network bandwidth.

when happens i see huge exception printing in jvb log,
2020-11-09 02:08:25.742 SEVERE: [76219] [confId=af3d987f43e8f450 epId=38a0609c local_ufrag=6n0291emm7jju1 gid=78914 stats_id=Kale-u3b conf_name=meeting_id@conference.mydomain.com] IceTransport.send#225: Error sending packet
java.io.IOException: No active socket.
at org.ice4j.socket.MergingDatagramSocket.send(MergingDatagramSocket.java:202)
at org.ice4j.socket.DelegatingDatagramSocket.send(DelegatingDatagramSocket.java:776)
at org.jitsi.videobridge.transport.ice.IceTransport.send(IceTransport.kt:222)
at org.jitsi.videobridge.Endpoint.doSendSrtp(Endpoint.java:426)
at org.jitsi.nlj.util.PacketInfoQueue$sam$org_jitsi_utils_queue_PacketQueue_PacketHandler$0.handlePacket(PacketInfoQueue.kt)
at org.jitsi.utils.queue.PacketQueue$HandlerAdapter.handleItem(PacketQueue.java:575)
at org.jitsi.utils.queue.AsyncQueueHandler$1.run(AsyncQueueHandler.java:141)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2020-11-09 02:08:25.742 WARNING: [76219] CountingErrorHandler.packetHandlingFailed#62: Failed to handle packet:
java.lang.RuntimeException
at org.jitsi.videobridge.transport.ice.IceTransport.send(IceTransport.kt:226)
at org.jitsi.videobridge.Endpoint.doSendSrtp(Endpoint.java:426)
at org.jitsi.nlj.util.PacketInfoQueue$sam$org_jitsi_utils_queue_PacketQueue_PacketHandler$0.handlePacket(PacketInfoQueue.kt)
at org.jitsi.utils.queue.PacketQueue$HandlerAdapter.handleItem(PacketQueue.java:575)
at org.jitsi.utils.queue.AsyncQueueHandler$1.run(AsyncQueueHandler.java:141)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

this log is being print too frequently.
@damencho can you please help me detect what could be the problem here ???