FWIW, I tried to upgrade from fully-patched 7.10 to 8.04.1 6 weeks ago and ran into this.
I tried a few of the fixes but nothing worked, so I restored the backup image to undo all changes.
I tried again this week and it worked perfectly.
FWIW, I tried to upgrade from fully-patched 7.10 to 8.04.1 6 weeks ago and ran into this.
I tried a few of the fixes but nothing worked, so I restored the backup image to undo all changes.
I tried again this week and it worked perfectly.