Anki desktop error on Mac

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Anki 2.1.49 (dc80804a) Python 3.8.6 Qt 5.14.2 PyQt 5.14.2
Platform: Mac 10.16
Flags: frz=True ao=False sv=2
Add-ons, last update check: 2022-08-03 07:04:09

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 168, in _linkHandler
File “aqt/”, line 172, in _deckLinkHandler
File “aqt/”, line 672, in moveToState
File “aqt/”, line 679, in _deckBrowserState
File “aqt/”, line 68, in show
File “aqt/”, line 142, in _renderPage
File “anki/scheduler/”, line 52, in deck_due_tree
File “anki/_backend/”, line 185, in deck_tree
google.protobuf.message.DecodeError: Error parsing message

Getting this error on Mac laptop not sure what to make of this or what to do

Your deck list is malformed, and nested more than 100 levels deep. Presumably you did not do this manually, so an add-on is likely to blame. I recommend you restore from a backup: Restoring an Automatic Backup (Recovering from Data Loss) - Frequently Asked Questions

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