Dear org-mode developers, Ihor, I got these warnings
immediately after I purged ~/.cache/org-persist, started
emacs/org-mode and tried to find some node via org-rifle.

Actually I did the purge and restart, because I got very
similar warnings before.

I don't know if this is useful, please tell me if there is
anything I can do to help investigate.


-- Ciao; Gregor
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