update-manager cannot access current release files on us.archive.ubuntu.com

[Barry Mead]

This is a screen shot of the output from the update manager:

https://u.pcloud.link/publink/show?code=XZnQ9TVZwwjXYUHnLqJocdjBeABvcuAsXt07

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-release-upgrader-core 1:22.04.15
ProcVersionSignature: Ubuntu 5.15.0-58.64-generic 5.15.74
Uname: Linux 5.15.0-58-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckMismatches: ./pool/restricted/n/nvidia-graphics-drivers-515/nvidia-kernel-source-515_515.65.01-0ubuntu0.22.04.1_amd64.deb
CasperMD5CheckResult: fail
CrashDB: ubuntu
CrashReports: 640:1000:124:3303291:2023-02-02 15:40:45.939524173 -0700:2023-02-02 15:40:46.939524173 -0700:/var/crash/_opt_brave.com_brave_brave.1000.crash
CurrentDesktop: ubuntu:GNOME
Date: Mon Feb 6 09:53:34 2023
InstallationDate: Installed on 2023-01-30 (7 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)