white screen

Hi, i suffer from “white screen” on certain pages.
This results is also to be seen in google serps which can show an “empty description”.
When i change theme from Enfold into another, the problem is solved.
Changing back to Enfold solves the problem.
This means it is not plugin related.
In Private Content you find 2 pdf files which proves my statement.
I encountered this problem with multiple pages from time to time.
Probably i do have other white pages at the moment, but have no time to sort this out, i stumble on them from time to time.