Strange 'critical error' from Qubes Manager

I open a firefox browser dispVM.

Then, I receive a critical error message - which originates from qubes Manager.

I was going to paste the text into nano and screenshot for debug here, but I get code execution warning (I guess because it references python functions).

Still, strange ‘critical error’, given there was no apparent malfunction.

Here’s the error message from several recent dom0 critical errors that I’ve gotten, also related to the beloved Qubes Manager:

----
line: yield from self._listen_for_events(vm)
func: listen_for_events
line no.: 139
file: /usr/lib/python3.8/site-packages/qubesadmin/events/__init__.py
----
line: return future.result()
func: run_until_complete
line no.: 313
file: /usr/lib/python3.8/site-packages/qasync/__init__.py
----
line: loop.run_until_complete(
func: run_asynchronous
line no.: 529
file: /usr/lib/python3.8/site-packages/qubesmanager/utils.py

Looks similar…

@qubes-kernel-5.8

This is the same error.
Did this appear after a particular action?

As above, for me, there was no apparent action, other than opening the dispVM (which opened & ran without any other issues), which I could think initiated this.

This has happened at least thrice in the past month. I haven’t noticed any patterns, but I haven’t deliberately tracked what I’ve been doing either…

I’m running a 4.1 .iso from the OpenQA

Update: I have gotten this error twice since posting, and it has happened both times right after I close a whonix-ws-15-dvm Tor Browser (AnonDist).