Prefs dialog: "module 'psychopy.sound' has no attribute 'getDevices'"

[DestyNova]

I tried adding pygame as the first choice in the list of audio libraries, since that was working well for me in an older version PsychoPy (with Python 2).

However, it doesn't seem to work on this machine, and now it's not possible to open the preferences dialog to undo the change:

Traceback (most recent call last):
  File "/home/omf/.local/lib/python3.8/site-packages/psychopy/app/_psychopyApp.py", line 767, in showPrefs
    prefsDlg = PreferencesDlg(app=self)
  File "/home/omf/.local/lib/python3.8/site-packages/psychopy/app/preferencesDlg.py", line 543, in __init__
    devnames = sorted(sound.getDevices('output'))
AttributeError: module 'psychopy.sound' has no attribute 'getDevices'