I can confirm that I get the same error, switched to UEFI, and the problem went away.
See my bugreport here: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1875084
I can confirm that I get the same error, switched to UEFI, and the problem went away.
See my bugreport here: https:/ /bugs.launchpad .net/ubuntu/ +source/ ubiquity/ +bug/1875084