[R-SIG-Mac] strange error message when using file selector after start of R.app

bretschr bret@chr @end|ng |rom x@4@||@n|
Tue Apr 30 00:13:03 CEST 2019

Dear R users/experts,

Since a few months I own a MacBook Air with Mac OS "Mojave".
Since I installed R 3.5.2 on it, I get the error message (in red) in the R.app console, the first time I invoke a file selector (e.g. to laod a script).
After updating to 3.6.0 the same error message occurs.
I don't get this with R.app on an other computer, running R 3.6.0 on Mac OS El Capitan.

> objc[12326]: Class FIFinderSyncExtensionHost is implemented in both /System/Library/PrivateFrameworks/FinderKit.framework/Versions/A/FinderKit (0x7fff95bf43c8) and /System/Library/PrivateFrameworks/FileProvider.framework/OverrideBundles/FinderSyncCollaborationFileProviderOverride.bundle/Contents/MacOS/FinderSyncCollaborationFileProviderOverride (0x10a5fdf50). One of the two will be used. Which one is undefined.

This is far beyond my R knowledge. Does anybody know  (i) what it means, and  (ii) how to solve or get rid of this (apparent) problem?
If it is not Mac-specific, I could post it to the general R-help.

Thanking you in advance,

Franklin Bretschneider
Utrecht University,
Utrecht, The Netherlands

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