ERROR message keeps popping up

I can’t exit my Anki an error message keeps popping up.

Anki 2.1.44 (b2b3275f) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2
Platform: Mac 10.14.6
Flags: frz=True ao=False sv=?
Add-ons, last update check: 2021-06-01 18:25:18

Caught exception:
Traceback (most recent call last):
File “aqt/”, line 36, in cmd
File “aqt/”, line 135, in _onCmd
File “aqt/”, line 580, in _onBridgeCmd
File “aqt/”, line 169, in _linkHandler
File “aqt/”, line 190, in _statsLinkHandler
File “aqt/”, line 1087, in onStats
File “aqt/”, line 663, in _selectedDeck
File “anki/”, line 411, in selected
File “anki/”, line 51, in getitem
File “anki/”, line 37, in get_immutable
File “anki/_backend/”, line 662, in get_config_json
File “anki/_backend/”, line 101, in _run_command
pyo3_runtime.PanicException: called Result::unwrap() on an Err value: “PoisonError { inner: … }”

You’ll need to force Anki closed. If it happens again, what steps are you taking that triggers it?