I’m assuming this is a customer based tenant? Are you downloading the va image from the Tenant link in the UI setup, or did you download it elsewhere?
Check to see if there is a more recent stunt script that may be of help. STUNT Script (VA Support Script) - CoLab / Community Tools - SailPoint Developer Community. Try running it if you haven’t.
I’m not sure where to suggest from here. May be worth opening a ticket with SailPoint.
I feel your pain, I built the script based on weeks of troubleshooting. Please keep us updated, hopefully some others have ideas that are helpful.