The #1 crash link is unreachable:
https://errors.ubuntu.com/bucket/?id=/usr/bin/gnome-shell%3Agnome-shell%3A%20../../src/xcb_io.c%3A260%3A%20poll_for_event%3A%20Assertion%20%60%21xcb_xlib_threads_sequence_lost%27%27%20failed.
because of bug 1863689.
The #1 crash link is unreachable:
https:/ /errors. ubuntu. com/bucket/ ?id=/usr/ bin/gnome- shell%3Agnome- shell%3A% 20../.. /src/xcb_ io.c%3A260% 3A%20poll_ for_event% 3A%20Assertion% 20%60%21xcb_ xlib_threads_ sequence_ lost%27% 27%20failed.
because of bug 1863689.