Anki not syncing after updating cards

Hi there,

Hope everyone is well. I was wondering if anyone could help me understand why my anki isnt syncing?
Below is the error message:

Syncing failed:
Traceback (most recent call last):
File “aqt/sync.py”, line 429, in _sync
File “aqt/sync.py”, line 409, in _abortingSync
File “anki/sync.py”, line 137, in sync
File “anki/sync.py”, line 219, in sanityCheck
File “anki/schedv2.py”, line 68, in reset
File “anki/sched.py”, line 556, in _resetRev
File “</Applications/Anki.app/Contents/MacOS/decorator.pyc:decorator-gen-28>”, line 2, in _resetRevCount
File “anki/hooks.py”, line 666, in decorator_wrapper
File “anki/hooks.py”, line 663, in repl
File “/Users//Library/Application Support/Anki2/addons21/1460733408/hoochieMama.py”, line 163, in resetRevCount
return _old(sched)
File “anki/sched.py”, line 553, in _resetRevCount
File “anki/schedv2.py”, line 213, in _walkingCount
File “anki/decks.py”, line 630, in parents
KeyError: ‘AnKing::Zanki Step Decks::Zanki Respiratory’

Please follow the steps on https://faqs.ankiweb.net/when-problems-occur.html

Thank you! I ended up at check database and the message I got was that I had 4059 new cards with due > 1,000,000 and to consider repositioning them in the browse screen. Do I have to actually do anything here or is that just a suggestion?

Btw, the syncing problem did go away after clicking check database! I’m just worried it may come back again if I don’t do anything else?

If you find it crops up again after updating to the latest Anki version, please let me know the steps you’re taking that trigger it.