I agree with Ivan and this does not look related to horizon... According to https://snapcraft.io/thunderbird you have to report this to a different bug tracker. I've reassigned to the thunderbird project but the project does not use launchpad it seems.
** Project changed: horizon => thunderbird -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Dashboard (Horizon). https://bugs.launchpad.net/bugs/2095587 Title: Thunderbird snap not installable on stable branch Status in Mozilla Thunderbird: Invalid Bug description: Either on plain Ubuntu 24.04 or during the release upgrade the thunderbird snap is not able to install. The error message: Preparing to unpack .../thunderbird_2%3a1snap1-0ubuntu3_amd64.deb ... => Installing the thunderbird snap ==> Checking connectivity with the snap store ==> Installing the thunderbird snap error: cannot perform the following tasks: - Mount snap "thunderbird" (609) (installation not allowed by "dot-thunderbird" plug rule of interface "personal-files" for "thunderbird" snap) dpkg: error processing archive /var/cache/apt/archives/thunderbird_2%3a1snap1-0ubuntu3_amd64.deb (--unpack): new thunderbird package pre-installation script subprocess returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/thunderbird_2%3a1snap1-0ubuntu3_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) On the release upgrade to ubuntu 24 this can break the entire system and is therefore crittical. Currently the error also appears if you try to install thunderbird without the apt package via: sudo snap install thunderbird Only the beta branch with sudo snap install --beta thunderbird seems to be working. To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/2095587/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
