Moving Music Library to a new hard drive

The external hard drive that contains my Music Library is failing. I've purchased a new drive and am attempting to move the library to the new drive.

I am following the steps described on this page:

https://support.apple.com/guide/music/change-where-music-files-are-stored-mus69248042d/1.1/mac/11.0

I've attempted it at least 3 times, but it fails at the end. I select the new location in Preferences, exactly as defined in the article. It seems to function as it should during most of the "Consolidate your files in the Music folder" step. The files are copied to the new drive as they are supposed to do.

But at the end -- it fails to create a new Music Library.musiclibrary on the new drive.

So all of the song files are now on the new drive, but the Music Library.musiclibrary remains on the old drive. What am I missing?

I'm concerned that the old drive is going to fail completely and then I will be in a real mess.

I need help please.