Client Connection Failed, clearing up resources for session

My instance is running on version 2.34.6 build ec64f0a and the operating system is Ubuntu 20.4. In the Catalina log, I see the following errors below and I don’t know why. Kindly with the interpretation of this log.

Nov 20 02:00:19 nctva tomcat9[279]: * INFO 2021-11-20T02:00:19,157 ‘system-process’ update org.hisp.dhis.scheduling.JobConfiguration, name: Analytics run at 12am, uid: W8XEAbxpHJ0 (AuditLogUtil.java [taskScheduler-7])
Nov 20 02:00:19 nctva tomcat9[279]: * WARN 2021-11-20T02:00:19,163 AMQ222061: Client connection failed, clearing up resources for session 9cda0ca2-49a5-11ec-9588-00163e82479b (ServerSessionImpl.java [Thread-2 (activemq-netty-threads)])
Nov 20 02:00:19 nctva tomcat9[279]: * WARN 2021-11-20T02:00:19,163 AMQ222107: Cleared up resources for session 9cda0ca2-49a5-11ec-9588-00163e82479b (ServerSessionImpl.java [Thread-2 (activemq-netty-threads)])
Nov 20 02:00:19 nctva tomcat9[279]: * WARN 2021-11-20T02:00:19,164 AMQ222061: Client connection failed, clearing up resources for session 9cda33b3-49a5-11ec-9588-00163e82479b (ServerSessionImpl.java [Thread-2 (activemq-netty-threads)])
Nov 20 02:00:19 nctva tomcat9[279]: * WARN 2021-11-20T02:00:19,164 AMQ222107: Cleared up resources for session 9cda33b3-49a5-11ec-9588-00163e82479b (ServerSessionImpl.java [Thread-2 (activemq-netty-threads)])

Thank you for your post @Gerald_Thomas! I wonder if you are getting any related errors in the Console of your browser’s developer tools? Do you have other instances in your server, and if yes then do you see the same error?

Thanks! (: