Reg: Audio not working for few partipants

For few of my participants i am getting an error . Video works and audio is not working . i see an error in jitsi log below . I am not sure on the same.

020-08-06 17:17:12.490 INFO: [309] org.jitsi.impl.protocol.xmpp.XmppPro$
Jicofo 2020-08-06 17:17:13.490 INFO: [309] org.jitsi.impl.protocol.xmpp.XmppPro$
$nalComponentManager.error()
java.net.SocketException: Broken pipe (Write failed)
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)