Error message for Extras/Extensions

Hi there,
I have been having an issue with my Anki that whenever I open the Application an error message pops up saying that one of the extensions isn´t working and wants me to close the application.
Whenever Anki loads on my laptop, I receive the same error message - below. It prompts me to check my database but this does no solve the issue. I have tried updating to the newest version but that also didnt help and the message just keeps popping up. Anki doesnt seem to be working anymore and now I dont know what to do.
This is the message that keeps popping up:

Anki 2.1.48 (fb07bad3) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2
Platform: Mac 10.16
Flags: frz=True ao=False sv=3
Add-ons, last update check: 2023-11-28 16:42:00

Caught exception:
Traceback (most recent call last):
File “aqt/”, line 41, in cmd
File “aqt/”, line 142, in _onCmd
File “aqt/”, line 595, in _onBridgeCmd
File “aqt/”, line 91, in _linkHandler
File “aqt/”, line 672, in moveToState
File “aqt/”, line 694, in _reviewState
File “aqt/”, line 141, in show
File “aqt/”, line 161, in refresh_if_needed
File “aqt/”, line 211, in nextCard
File “aqt/”, line 315, in _showQuestion
File “anki/”, line 124, in question
File “anki/”, line 140, in render_output
File “anki/”, line 217, in render
File “anki/”, line 261, in _partially_render
File “anki/_backend/”, line 602, in render_existing_card
File “anki/_backend/”, line 131, in _run_command
anki.errors.InvalidInput: Ungültige Eingabe: ⁨missing template⁩

Any help would be appreciated!

You’re using an old version. You should try upgrading to 23.10 and see if that helps.

If you need some addon that is not working yet on 23.10, try 2.1.66.

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You have an invalid note type. Tools > Check Database may fix the issue, though I’m not sure of that.

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