Now (with the iso file dated 20231016.1) I am affected too (at least I get the same error output).
The Ubuntu mantic-desktop-amd64.iso failed, but after that the Lubuntu mantic-desktop-amd64.iso succeeded, so I have confirmed that the computer is working correctly (nothing ugly has turned off booting from the internal drive of my Dell Latitude E7240).
Now (with the iso file dated 20231016.1) I am affected too (at least I get the same error output).
The Ubuntu mantic- desktop- amd64.iso failed, but after that the Lubuntu mantic- desktop- amd64.iso succeeded, so I have confirmed that the computer is working correctly (nothing ugly has turned off booting from the internal drive of my Dell Latitude E7240).