Quick fix for Quicklook not previewing files - follow up

I continue to have an issue in Catalina where hitting the space bar (having single clicked on an image or video file) fails to provide a "Quicklook" preview, as it did in Mojave.

This solution below from GonçaloCatarino, works for me (thanks Gonçalo), but after a certain amount of time, the problem then arises again, with Quicklook not working - even before my Mac has been restarted - in the same session.

Anyone have any additional advice on I might add to this Terminal command to make it permanent, not temporary?

sudo update_dyld_shared_cache -force

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Answer from 2018

GonçaloCatarino

Q:

quick fix for Quicklook not previewing files

This is not so much a question but rather a quick solution for this (somewhat frequent) problem:

#1 - open Terminal.app

#2 - Copy/paste

sudo update_dyld_shared_cache -force

#3 - it should take 1-2 minutes.

It worked for me.

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