The problem is that the link for the GNOME Bugzilla bug tracker was changed to https://gitlab.gnome.org, that is not compatible with the previous URL (https://bugzilla.gnome.org) when links to individual bugs are generated by Launchpad (of the form ⟨base URL⟩/show_bug.cgi?id=⟨bug number⟩). That change should be reverted, by merging https://bugs.launchpad.net/bugs/bugtrackers/auto-bugzilla.gnome.org into https://bugs.launchpad.net/bugs/bugtrackers/gnome-bugs, and I believe this requires a Launchpad Administrator or a Registry Administrator.
The problem is that the link for the GNOME Bugzilla bug tracker was changed to https:/ /gitlab. gnome.org, that is not compatible with the previous URL (https:/ /bugzilla. gnome.org) when links to individual bugs are generated by Launchpad (of the form ⟨base URL⟩/show_ bug.cgi? id=⟨bug number⟩). That change should be reverted, by merging https:/ /bugs.launchpad .net/bugs/ bugtrackers/ auto-bugzilla. gnome.org into https:/ /bugs.launchpad .net/bugs/ bugtrackers/ gnome-bugs, and I believe this requires a Launchpad Administrator or a Registry Administrator.