Error when switching to new profile

🐛 Bug
1

Before the error happened, I was…
switching to a different profile.

Error message (don't change this) 
Anki 25.09.2 (3890e12c) (ao)
Python 3.13.5 Qt 6.9.1 PyQt 6.9.1
Platform: macOS-26.4.1-arm64-arm-64bit-Mach-O

Traceback (most recent call last):

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/aqt/taskman.py", line 152, in raise_exception
    raise exception

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/aqt/taskman.py", line 148, in _on_closures_pending
    closure()
    ~~~~~~~^^

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/aqt/taskman.py", line 88, in <lambda>
    lambda future: self.run_on_main(lambda: on_done(future))
                                            ~~~~~~~^^^^^^^^

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/aqt/operations/__init__.py", line 253, in wrapped_done
    self._failure(exception)
    ~~~~~~~~~~~~~^^^^^^^^^^^

  File "/Users/brettransegnola/Library/Application Support/Anki2/addons21/1322529746/gui/media_sync.py", line 64, in on_failure
    raise exception

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/python/cpython-3.13.5-macos-aarch64-none/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/aqt/operations/__init__.py", line 243, in wrapped_op
    return self._op(mw.col)
           ~~~~~~~~^^^^^^^^

  File "/Users/brettransegnola/Library/Application Support/Anki2/addons21/1322529746/gui/media_sync.py", line 68, in <lambda>
    op=lambda _: self._update_deck_media_and_download_missing_media(),
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^

  File "/Users/brettransegnola/Library/Application Support/Anki2/addons21/1322529746/gui/media_sync.py", line 136, in _update_deck_media_and_download_missing_media
    missing_media_names = self._missing_media_for_ah_deck(ah_did)

  File "/Users/brettransegnola/Library/Application Support/Anki2/addons21/1322529746/gui/media_sync.py", line 214, in _missing_media_for_ah_deck
    referenced_media = self._media_referenced_by_notes(ah_did)

  File "/Users/brettransegnola/Library/Application Support/Anki2/addons21/1322529746/gui/media_sync.py", line 195, in _media_referenced_by_notes
    note = aqt.mw.col.get_note(nid)

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/anki/collection.py", line 497, in get_note
    return Note(self, id=id)

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/anki/notes.py", line 50, in __init__
    self.load()
    ~~~~~~~~~^^

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/anki/notes.py", line 56, in load
    note = self.col._backend.get_note(self.id)

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/anki/_backend_generated.py", line 1489, in get_note
    raw_bytes = self._run_command(25, 6, message.SerializeToString())

  File "/Users/brettransegnola/Library/Application Support/AnkiProgramFiles/.venv/lib/python3.13/site-packages/anki/_backend.py", line 171, in _run_command
    raise backend_exception_to_pylib(err)

anki.errors.InvalidInput: CollectionNotOpen

Sentry link (for developers)

2

Hello,

Please restart Anki to see if the error persists. Always wait for any sync to finish before changing profiles in Anki.

If the error persists update your AnkiHub add-on:

  1. On your Anki main screen, go to Tools > Add-ons > Check for Updates.
  2. After the update is complete, please restart Anki.
1 Like
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