It is trying to open the air library, which wont work.
https://www.posersoftware.com/article/499/how-to-fix-your-runtime-now-that-adobe-flash-has-reached-end-of-life
Look under Option 2. It has been ages since I had to do this, but it should still work.
Some things are easy to explain, other things are not........ <- Store -> <-Freebies->
