Error when handling tagged files in Finder

When handling files with Finder tags I frequently get an error alert, "The operation can't be completed. An unexpected error occurred (error code -8076)." This usually happens when I have multiple tagged items selected. Sometimes it happens a few times in quick succession, with the alert popping up again as soon as it is dismissed... & again, & again, up to 5 times. Can anyone tell me of a way to stop this happening? (apart from not using Finder tags)