Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF no backup trying to delete a disk partition, the disks utility has given an error and now the Macintosh HD volume was not in APFS.

But of course, being different, does not match anything with mine. It also seemed to me that the information would not be lost, since it is still in the partition this is badly done

I attach a photo.
I fixit this problem following this guide

OS volume shows as type &#39;FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF&#39;

Thx all!