# Class FIFinderSyncExtensionHost - Warning on OSX xCode console

**URL:** <https://forum.juce.com/t/class-fifindersyncextensionhost-warning-on-osx-xcode-console/28356>\
**Category:** General JUCE discussion\
**Created:** [July 1, 2018, 1:37pm UTC](https://forum.juce.com/t/class-fifindersyncextensionhost-warning-on-osx-xcode-console/28356 "2018-07-01T13:37:47Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pajczur](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pajczur](https://forum.juce.com/u/pajczur)\
**Post date:** [July 1, 2018, 1:37pm UTC](https://forum.juce.com/t/class-fifindersyncextensionhost-warning-on-osx-xcode-console/28356/1 "2018-07-01T13:37:47Z")

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Hello,  
I am making simply audio player, and my `FileChooser`, gives me enigmatic (at least for me 🙂 ) warning when I click open button which calls `chooser.browseForFileToOpen()`.

That Warning doesn’t cause any error, but I don’t know should I worry about that or not?

The warning says:

> objc[74738]: Class FIFinderSyncExtensionHost is implemented in both /System/Library/PrivateFrameworks/FinderKit.framework/Versions/A/FinderKit (0x7fffae5cdc90) and /System/Library/PrivateFrameworks/FileProvider.framework/OverrideBundles/FinderSyncCollaborationFileProviderOverride.bundle/Contents/MacOS/FinderSyncCollaborationFileProviderOverride (0x10cd7bcd8). One of the two will be used. Which one is undefined.  
> 2018-07-01 15:28:26.800981+0200 PajFFTproject[74738:14425566] errors encountered while discovering extensions: Error Domain=PlugInKit Code=13 “query cancelled” UserInfo={NSLocalizedDescription=query cancelled}

Could anyone give some advice what to do with that?  
Great thanks in advance.

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**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://forum.juce.com/u/jules)\
**Post date:** [July 3, 2018, 8:47am UTC](https://forum.juce.com/t/class-fifindersyncextensionhost-warning-on-osx-xcode-console/28356/2 "2018-07-03T08:47:25Z")

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Nothing in JUCE uses that class, it’s some kind of internal Apple thing. I doubt if it’s anything you need to worry about.

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**Author:** ![oortone](https://avatars.discourse-cdn.com/v4/letter/o/a183cd/32.png) [@oortone](https://forum.juce.com/u/oortone)\
**Post date:** [September 17, 2021, 10:46am UTC](https://forum.juce.com/t/class-fifindersyncextensionhost-warning-on-osx-xcode-console/28356/3 "2021-09-17T10:46:30Z")

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Since I get the exact same error code, is “that class” not being used refering to `NSLocalizedDescription`?