Can't open stats because I get this error

[D4n22]

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-on support site.
Debug info:
Anki 2.1.22 (0ecc189a) Python 3.8.0 Qt 5.14.1 PyQt 5.14.1
Platform: Windows 10
Flags: frz=True ao=True sv=1
Add-ons, last update check: 2020-04-27 10:09:44

Caught exception:
Traceback (most recent call last):
File "aqt\main.py", line 1016, in onStats
File "C:\Users\user\AppData\Roaming\Anki2\addons21\354407385_init_.py", line 60, in open
return function(name, *args, **kwargs)
File "C:\Users\user\AppData\Roaming\Anki2\addons21\354407385_init_.py", line 70, in openMany
instance = creator(*args, **kwargs)
File "<C:\Program Files\Anki\decorator.pyc:decorator-gen-52>", line 2, in init
File "lib\site-packages\anki\hooks.py", line 666, in decorator_wrapper
File "lib\site-packages\anki\hooks.py", line 657, in repl
File "aqt\stats.py", line 52, in init
File "aqt\stats.py", line 97, in refresh
File "lib\site-packages\anki\stats.py", line 131, in report
File "<C:\Program Files\Anki\decorator.pyc:decorator-gen-46>", line 2, in easeGraph
File "lib\site-packages\anki\hooks.py", line 666, in decorator_wrapper
File "lib\site-packages\anki\hooks.py", line 663, in repl
File "C:\Users\user\AppData\Roaming\Anki2\addons21\633922407\tagmon.py", line 38, in tagmonDisplay
tagmon = TagPokemon()
File "C:\Users\user\AppData\Roaming\Anki2\addons21\633922407\tagmon.py", line 214, in TagPokemon
if config['generation_1']:
KeyError: 'generation_1'