Time Machine couldn't complete the backup - an error occurred while copying files...
Issue
Time Machine on MacBook Air fails every time with the following error:
Time Machine couldn't complete the backup to "MacBook Air Time Capsule".
An error occurred while copying files. The problemmay be temporary. If the problem persists, use DiskUtility to repair your backup disk.
Other MacBooks backup to the same Time Capsule disk with no issues.
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