GarageBand: Audio Unit plug-in can't be used

Hi all! I believe this is a common issue that occurs when loading JUCE .component files:

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There could a couple of reasons why this is occurring: sandboxing, AWS, static libraries, I’m really not sure why the .component is failing but the .app succeeds.

What I would like to know is how to get more information from this error (since I can’t exactly debug the AU), and if the AU still has to be sandbox safe to run on GarageBand (I know this was an issue back in 2018 but thought it was fixed):
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As always, thank you so much for the help!