Huge unwanted errors in camunda community edition log file

Hi All,
I am using Camunda community edition version 7.8.0. I have deployed few sample processes to Camunda and I was able to test those processes successfully with out any issue. But when I inspect catalina.out logfile, i see many unwanted errors in the log file. For example, if I refresh the cockpit page, this event is also generating error in the log file. I am not sure what is the problem. Can anyone please suggest?