AnkiCollab error message

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.
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Debug info:
Anki 2.1.54 (b6a7760c) Python 3.9.7 Qt 5.15.2 PyQt 5.15.5
Platform: Windows 10
Flags: frz=True ao=True sv=2
Add-ons, last update check: 2023-02-22 11:11:32

Exception in thread Thread-4:
Traceback (most recent call last):
  File "threading", line 973, in _bootstrap_inner
  File "threading", line 910, in run
  File "C:\Users\whats\AppData\Roaming\Anki2\addons21\1957538407\main.py", line 75, in request_update
    handle_pull(None)
  File "C:\Users\whats\AppData\Roaming\Anki2\addons21\1957538407\import_export.py", line 77, in handle_pull
    deck.save_to_collection(aqt.mw.col, import_config=config)
  File "C:\Users\whats\AppData\Roaming\Anki2\addons21\1957538407\crowd_anki\representation\deck.py", line 140, in save_to_collection
    self.save_decks_and_notes(collection=collection,
  File "C:\Users\whats\AppData\Roaming\Anki2\addons21\1957538407\crowd_anki\representation\deck.py", line 163, in save_decks_and_notes
    note.save_to_collection(collection, self, model_map_cache, import_config=import_config)
  File "C:\Users\whats\AppData\Roaming\Anki2\addons21\1957538407\crowd_anki\representation\note.py", line 119, in save_to_collection
    self.handle_model_update(collection, model_map_cache)
  File "C:\Users\whats\AppData\Roaming\Anki2\addons21\1957538407\crowd_anki\representation\note.py", line 76, in handle_model_update
    collection.models.change(self.note_type(),
  File "anki.models", line 407, in change
  File "anki.collection", line 328, in mod_schema
  File "anki.hooks_gen", line 607, in __call__
  File "aqt.main", line 1496, in onSchemaMod
Exception: not in main thread
Exception in threading.excepthook:
Exception ignored in thread started by: <bound method Thread._bootstrap of <Thread(Thread-4, started 18040)>>
Traceback (most recent call last):
  File "threading", line 930, in _bootstrap
  File "threading", line 975, in _bootstrap_inner
  File "threading", line 1244, in invoke_excepthook
AttributeError: 'ErrorHandler' object has no attribute 'flush'
Exception ignored in sys.unraisablehook: <built-in function unraisablehook>
AttributeError: 'ErrorHandler' object has no attribute 'flush'