A problem occurred while processing the request.Using Tomcat And Jenkins

Hello gyus,
Need help I am trying to integrate github repo in jenkins by using apache tomcat and I
got err A problem occurred while processing the request.
while doing through methods like create instances I did not got any err

@Mohit
Can you describe what are you trying to achieve. with error logs

My steps are
First I have installed Apache tomcat in my windows
Second I put war files in my webpage in Apache tomcat
these things are running fine but when I try to integrate with github putting git repo
location using freestyle job after that when I save that job I got error A problem occurred while processing the request

might be a problem of old plugins. Have you updated all plugins to latest version?
You should check the tomcat logs for errors