Auv3 error: default.metallib

I’m extremely new to JUCE so forgive me if this is something super obvious, but I’m trying to build an auv3 plugin. I can get it to deploy to my iPad finally, but when I try and load it in AUM I get:

JUCE v8.0.8
Unable to open mach-O at path: default.metallib Error:2

Although I should note that it still seems to work? So I guess I can just ignore this error?

This looks like log noise, i.e. a message from elsewhere in the system that you can safely ignore.