/usr/lib/python3.7/site-packages/ulauncher/main.py:8: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk

                    [!]
        Looks like you are in Wayland session
        Please run Ulauncher with env var
        GDK_BACKEND set to 'x11' like this:

        GDK_BACKEND=x11 ulauncher