Unknown error message when attempting to move image to a collection.

LRC Says, "An internal error has occured. ?:0: attempt to comparer two nil values"

Does anyone know what the hell that means and what can I do about it?

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Community Expert

Lightroom-Classic uses "Collections"

An acknowledged 'Bug' has popped up in v10 for 'Adding' photos to a Collection.

See this link at the Adobe Feedback site-

Regards. My System: Windows-11, Lightroom-Classic 15.1.1, Photoshop 27.3.1, ACR 18.1.1, Lightroom 9.0, Lr-iOS 10.4.0, Bridge 16.0.2 .

Community Expert

Which Adobe product or service is this question related to?

Which operating system?

Nancy O'Shea— Product User & Community Expert

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