My Windows 10 machine crashed while I was updating TeX Live.
Now, when I launch TeX Live Manager I got this error:
Is there a way to recover it?
Since nobody seems to know the answer, I solved reinstalling TeX Live 2021.
I went to C:\texlive\2021\tlpkg\installer and run uninst.bat.
I removed the directory C:\texlive\2021 (already almost empty after running uninst.bat).
I reinstalled TeX Live 2021, as usual, running install-tl-windows.exe of the TeX Live site.
All up and running now.