I have followed the docs and continue to have the same outcome when I actually click on the Presentation that I created from query results: "Unknown system error". My Presentation is associated with a very simple BO with two attributes: Time, and Description. I run a simple query and with the "operations allowed" to include viewing the results using the simple Presentation I created. It simply bombs every time with the same error message. I am running V5(1412) on a RedHat Linux VM.
I didn't find the right solution from the Internet.
Blockchain app marketing