Import into macOS 10.15 Catalina's Apple Music does not work: unknown error -54; likely root cause: file access permissions Something is wrong with my version of Apple Music following an upgrade to macOS 10.15 Catalina. Importing songs fails with error "Copying files failed. An unknown error occured (-54)".

The problem goes away if I choose Preferences / Files / Copy Files to Music Media folder when adding to library: No, but resurfaces when I then choose File / Library / Organize Library / Consolidate files.

So this looks clearly like an issue in relation to file access permissions. I did't change from the defaults, and e.g. my Music/iTunes has "Read &amp; Write" only for "Me", which seems readanable.

Is this a known issue (apparently not known to Google in this particular incarnation at this point) and how can it be remedied? I prefer a "conservative" solution in terms of granting additional access rights.
The following procedure removed the problem:


In Finder, select /Users/myaccount/Music/iTunes, the "Get Info".
Current permissions are me: Read &amp; Write, system: Read &amp; Write, wheel: Read only, everyone: Read only. (I apparently mad a mistake in the earlier observation that only me had Read &amp; Write permission there.)
Select "Apply to enclosed items".