Why UE4.11, 4.12, 4.14 crashed when I reopened my old projets?

How i solved this issue? My old projects with UE4.11 and UE4.12, UE.13 used to work beautifully on my Mac one year ago. Since I’m working on new projects more recent 4.21. 4.22, 4.23 I can’t reopened my old projects using 4.11, 4.12, 4.13 version of UE4. Which means I can’t reuse the assets that I purchased limited to 4.11, 4.12 and 4.13 version of UE4.

If anyone knows how to solve this issue, let me know.

I’ve never had such issues with Unity, at least I was able to reopen the old projects.

Thanks for your time.