Error message

[s3500659]

I keep getting the below error when reviewing my deck

Error
An error occurred. Please start Anki while holding down the shift key, which will temporarily disable the add-ons you have installed.
If the issue only occurs when add-ons are enabled, please use the Tools>Add-ons menu item to disable some add-ons and restart Anki, repeating until you discover the add-on that is causing the problem.
When you've discovered the add-on that is causing the problem, please report the issue on the add-ons section of our support site.
Debug info:
Anki 2.1.14 (7b93e985) Python 3.6.7 Qt 5.12.1 PyQt 5.11.3
Platform: Windows 10
Flags: frz=True ao=True sv=1

Caught exception:
File "aqt\webview.py", line 322, in handler
File "aqt\reviewer.py", line 461, in _onTypedAnswer
File "aqt\reviewer.py", line 223, in _showAnswer
File "anki\hooks.py", line 29, in runHook
File "C:\Users\Vinh\AppData\Roaming\Anki2\addons21\935264945\main.py", line 153, in onShowAnswer
mw.stateShortcuts.remove(qs)
<class 'ValueError'>: list.remove(x): x not in list