Problem upgrade to ZorinOS 18 via Zorin Update App

[Ponce-De-Leon]

@divad_seomis

deadsnakes-ubuntu-ppa-jammy.list
fingerprint-ubuntu-fingerprint-gui-jammy.list
git-core-ubuntu-ppa-jammy.list
heyarje-ubuntu-makemkv-beta-jammy.list
linrunner-ubuntu-tlp-jammy.list
mozilla.list
n-muench-ubuntu-vlc-jammy.list
steam-beta.list
steam-stable.list
teamviewer.list
vscode.sources
waydroid.list

I would suggest to disable - or delete - Your Third-Party Repo's and then test it again. Maybe one of them causes the Package Issue.