When you launch Access Manager Dashboard, it displays a blank screen. This can happen when time is not synchronized between Administration Console and Analytics Server. The time must be same on both servers. To understand if the issue is with time synchronization, you can check the log file at /opt/novell/nam/dashboard/logs/catalina.out. If the time is not synchronized, you will get the log information similar to the following example:
Security exception for user JWT expired at 2020-08-09T11:03:39+0530. Current time: 2020-08-09T16:21:44+0530
If the time is synchronized but Access Manager Dashboard URL launches a blank page, then you must perform the following on Administration Console Dashboard:
Click Troubleshooting > Certificates.
Click the certificate for Analytics Server.
Click Re-push certificates.