[SOLVED] Preview any cloze number

I get this error when this add-on is enabled. It appears when in browser I click on “Cards…” button.

Although the name of add-on is not specified in debug info, I checked all other add-ons that I have and Anki doesn’t display this error with them.

Preview any cloze number

Debug info:
Anki 2.1.29 (bbff62bf) Python 3.8.1 Qt 5.15.0 PyQt 5.15.0
Platform: Linux
Flags: frz=True ao=True sv=2
Add-ons, last update check: 2020-07-28 19:16:22

Caught exception:
Traceback (most recent call last):
  File "aqt/webview.py", line 490, in handler
  File "aqt/editor.py", line 479, in <lambda>
  File "aqt/editor.py", line 357, in _onCardLayout
TypeError: __init__() got an unexpected keyword argument 'fill_empty'

Operating System: Manjaro Linux
KDE Plasma Version: 5.19.3
KDE Frameworks Version: 5.72.0
Qt Version: 5.15.0
Kernel Version: 5.7.9-1-MANJARO

Previewing any colze number is build-in since 2.1.28, you do not need a add-on for that