Thanks Ihor

I am experiencing it since end of July 2023 when I upgraded to the 
version 9.6.15, but my situation now is stable with that workaround and 
I have no time now for reporting the problem right now.

I expect to have some time at the end of July 2024, and I hope to 
upgrade again orgmode and/or emacs to the latest stable version, then I 
will try again to see if I stop getting cache errors without regularly 
running =(org-element-cache-reset)=

Cheers,
pinmacs