Anki wont openbecause of really long error message

Before the error happened, I was…
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Error message (don't change this)
Anki 25.07.5 (7172b2d2) (ao)
Python 3.13.5 Qt 6.9.1 PyQt 6.9.1
Platform: Windows-11-10.0.26100-SP0

Traceback (most recent call last):

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\aqt\taskman.py", line 152, in raise_exception
    raise exception

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\aqt\taskman.py", line 148, in _on_closures_pending
    closure()
    ~~~~~~~^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\aqt\taskman.py", line 88, in <lambda>
    lambda future: self.run_on_main(lambda: on_done(future))
                                            ~~~~~~~^^^^^^^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\aqt\taskman.py", line 111, in wrapped_done
    on_done(fut)
    ~~~~~~~^^^^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\aqt\operations\__init__.py", line 253, in wrapped_done
    self._failure(exception)
    ~~~~~~~~~~~~~^^^^^^^^^^^

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\operations\ankihub_sync.py", line 150, in on_failure
    on_done(future_with_exception(exception))
    ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\auto_sync.py", line 100, in sync_with_ankiweb
    future.result()
    ~~~~~~~~~~~~~^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\python\cpython-3.13.5-windows-x86_64-none\Lib\concurrent\futures\_base.py", line 449, in result
    return self.__get_result()
           ~~~~~~~~~~~~~~~~~^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\python\cpython-3.13.5-windows-x86_64-none\Lib\concurrent\futures\_base.py", line 401, in __get_result
    raise self._exception

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\python\cpython-3.13.5-windows-x86_64-none\Lib\concurrent\futures\thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\aqt\operations\__init__.py", line 243, in wrapped_op
    return self._op(mw.col)
           ~~~~~~~~^^^^^^^^

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\operations\ankihub_sync.py", line 139, in <lambda>
    op=lambda _: ah_deck_updater.update_decks_and_media(
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        ah_dids,
        ^^^^^^^^
        raise_if_full_sync_required=raise_if_full_sync_required,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        start_media_sync=start_media_sync,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ),
    ^

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\deck_updater.py", line 65, in update_decks_and_media
    self._update_decks(ah_dids)
    ~~~~~~~~~~~~~~~~~~^^^^^^^^^

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\deck_updater.py", line 88, in _update_decks
    should_continue = self._update_single_deck(ah_did)

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\deck_updater.py", line 102, in _update_single_deck
    result = self._fetch_and_apply_deck_updates(ankihub_did)

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\gui\deck_updater.py", line 143, in _fetch_and_apply_deck_updates
    import_result = self._importer.import_ankihub_deck(
        ankihub_did=ankihub_did,
    ...<12 lines>...
        clear_ah_note_types_before_import=True,
    )

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\main\importing.py", line 152, in import_ankihub_deck
    self._local_did = _adjust_deck(deck_name, anki_did)
                      ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^

  File "C:\Users\kenzg\AppData\Roaming\Anki2\addons21\1322529746\main\importing.py", line 840, in _adjust_deck
    elif aqt.mw.col.decks.name_if_exists(local_did) is None:
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\anki\decks.py", line 391, in name_if_exists
    deck = self.get(did, default=False)

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\anki\decks.py", line 247, in get
    deck = self.get_legacy(id)

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\anki\decks.py", line 156, in get_legacy
    return from_json_bytes(self.col._backend.get_deck_legacy(did))
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\anki\_backend_generated.py", line 455, in get_deck_legacy
    raw_bytes = self._run_command(7, 12, message.SerializeToString())

  File "C:\Users\kenzg\AppData\Local\AnkiProgramFiles\.venv\Lib\site-packages\anki\_backend.py", line 171, in _run_command
    raise backend_exception_to_pylib(err)

anki.errors.DBError: DbError { info: "SqliteFailure(Error { code: DatabaseCorrupt, extended_code: 11 }, Some(\"database disk image is malformed\"))", kind: Other }

Sentry link (for developers)

Your collection is corrupted. You need to restore a working version from a recent backup. Please see this for instructions: Backups - Anki Manual

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