Does My Book 1230 Media work with macOS Catalina?

I recently upgraded to macOS Catalina 10.15.
In my finder I show only SuperDuper but not, as before, also WD MyBook.
I do find WD MyBook in Disk Utilities where I have partitioned Super Duper for 1 TB and what-used-to-be WD MyBook for 2 TB. Now, however, the second partition is listed as ‘disk2s3’.
I tried running First Aid and get this message: ‘First Aid process has failed. If possible, back up the data on this volume.’
I am able to run Super Duper but not Time Machine (which is what I had designated…and previously ran fine…on the WD MyBook partition, now listed as ‘disk2s3’.
Please advise.