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After updating to macOS Big Sur 11.0.1, a 3rd party epub quicklook plugin stopped working:

enter image description here

I've already forgotten how I installed the plugin (from Homebrew cask or downloaded from the web, but judging from the error message, it was the latter one). If it's an unnotarized GUI app, I'd remove the com.apple.quarantine attribute from the app so that it would work, but I don't know how to do that with a quick look plugin.

Is there a way to make the plugin work?

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You do the same thing as with an app. QuickLook plugins are installed to ~/Library/QuickLook.

You can run xattr -d -r com.apple.quarantine ~/Library/QuickLook to remove the com.apple.quarantine attribute from all QuickLook plugins.

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  • Thanks for the answer, but it doesn't work. Maybe it's not a QL plugin?
    – Teddy C
    Dec 18, 2020 at 1:13
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    Ah, apologies. This is a Spotlight plugin as well as a QuickLook plugin. Check that epub.mdimporter is in ~/Library/Spotlight, and run xattr -d -r com.apple.quarantine ~/Library/Spotlight to remove com.apple.quarantine from the Spotlight plugins folder. Dec 18, 2020 at 18:12
  • It's weird bcz I couldn't find ~/Library/Spotlight dir on Big Sur...
    – Teddy C
    Dec 19, 2020 at 3:44

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