/usr/sbin/gdm3:5:get_fallback_session_name:get_default_session_name:get_session_name:get_session_filename:gdm_session_is_wayland_session

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding gdm3. This problem was most recently seen with package version 3.25.90.1-0ubuntu4, the problem page at https://errors.ubuntu.com/problem/b8e7721d0034b2c4a5ddafcac2e1cc55703f9dbd contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.