'Class FIFinderSyncExtensionHost is implemented in both …' warning in Xcode since update to macOS High Sierra

Question

I am getting the following warning in the Xcode console while running (not compiling) my application since updating to High Sierra on my MacBook:

objc

Answer 1

There's nothing you can do about this. It's an Apple problem, but it's probably harmless.

Note: I'm not sure what other description could be given than what the warning says. It just means that the same class is defined in two modules. With Apple stuff, they're often identical so it doesn't matter which copy is used.