Plex update failed: installer cannot rename Application

Server Version#: 1.30.1.6483
Player Version#:

This is a new one apparently. When trying to update PMS to latest version (from 1.30.1.6483 to 1.30.1.6497), I’m getting the following error message:

Unable rename /Applications/Plex Media Server.app to /Applications/Plex Media Server.app.bak and we where not allowed to copy details: Operation not permitted

I tried giving Read & Write permissions to everybody on the App by Finder but it doesn’t work. Hints, besides deleting and downloading a fresh new version?

Screenshot 2022-12-21 at 18.41.07

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