Comment 26 for bug 1952766

That assertion seems to repeat in comment #5, so it's not fatal and not the root cause of any crash. Everyone still experiencing crashes please open a new bug from the affected machine and follow:

https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment

I don't think commenting here is helpful anymore. Also this bug is already closed.