Try this topic. It can be a challenge to get everything resolved.
Don’t know if you have a lot of designs made up already before you get too many. The upgrade rescales old ones, but it’s not a big deal. There are a few perks with the newest, especially mesh gradient.
Looks like it would be helpful to make a step by step instruction for this. It is technical and takes some digging. I just kept googling the error message and found some places that showed the fix.