Steps-to-reproduce (STR):
1. Login to Modern > Timesheets > Timesheets Grid page
2. Select any time period that is Open and click on Detail > Open Timesheet
does not have a timesheet created. Click 'Go To Timesheet'
3. Scroll the 'My Timesheet' page carousel to an Open period
Actual Results: Error appears: com.ca.ppm.rest.exception.APISystemException:java.util.ConcurrentModificationException
Expected Results:There should not be an error, even though functionality is not affected
Additonal error messages that can be seen in the APP logs:
API 1003: Could not find resource timesheetCarousel.
Release : 16.0.1
Restart both APP and BG services to see if this is a caching issue.
If there is a generic API error: API 1019: Could not process the request due to internal Error
review the issue with the browser Developer Tools to find out if there are any HTTP errors shown.