If you are using Altair Display Manager and you encounter this Error Message (java.util.concurrent.ExecutionException) below
Resolution Step 1:
Click the Icon at the top left hand corner of the browser
Resolution Step 2:
Click the Compute Manager Icon
Resolution Step 3:
On the Top-Right Corner of the Browser, click the setting icon and “Edit/Unregister”
Resolution Step 4:
Click the bottom left hand corner and click “Unregister”
Click “Yes”
Resolution Step 5:
Click “Save”
Log out and Login again