When we are trying to run the UIM installer for upgrade we are getting the below error.
From installation log:-
ERROR impl.UIMServerUpgradePreparationPanel$UpgradePreparationSwingWorkerThread:doInBackground:278 [SwingWorker-pool-1-thread-2] - Exception caught during validation checks. (90) Configuration error, Failed to retrieve necessary information from configuration files for upgrade. An uninstall and re-install of the product is required.: Illegal base64 char found '@'
Caused by: (110) Security error, Illegal base64 char found '@'