We recently moved from v7.1.7 to v7.3.1 found that after clicking System Information page pop-up coming as empty... in trace or logs we are not getting anything, if anyone faced similary issue.. guide us know can we fix this issue.
Is it just the System Information popup where you see the problem? I worked a case previously where the popups for adding a ruleset version and check-in were not working properly. HFix-42996 was generated for that issue.
I see the System Information button calls the GetWebInfo activity. You mentioned there was nothing in the logs or trace. If you do a network trace using Fiddler or the browser developer tools, do you see the request being sent for the button click?
If you are not seeing any results, then the problem is occurring in the Java step of SysWebInfo. I suggest you get a private checkout of this rule and instrument it so that you can see where things are failing.
You can add the special event type "Debug" (case counts) to the Tracer and then enable it as an event by checking it. You can sprinkle throughout the Java step lines such as this:
pega_rules_utilities.sendDebugMessageToTracer ("The value of property foo is " + foo, "Pega-SystemArchitect");
The first arg is a message just like you would add to "log-message". The 2nd arg (in double-quotes) is the ruleset name that contained the activity.
If you add enough of these and then run the activity with Tracer enabled, you'll find out where the train is going off the tracks.