I am not able to sync my anking decks between my desktop and my ipad

🐛 Bug
1

Before the error happened, I was…trying to sync my anking decks from my desktop to my ipad, but it simply doesn´t and then this bugged popped up.

Error message (don't change this) 
Anki 2.1.56 (07fd88dd) Python 3.9.23 Qt 6.6.2 PyQt 6.6.1
Platform: Windows-10-10.0.22631-SP0
Flags: frz=False ao=True sv=2
Add-ons, last update check: 2026-04-08 01:00:39

Traceback (most recent call last):

  File "C:\Users\DELL\AppData\Roaming\Anki2\addons21\1322529746\gui\operations\ankihub_sync.py", line 247, in _schedule_post_sync_tasks
    aqt.mw.taskman.run_in_background(aqt.mw.col.tags.clear_unused_tags, on_done=_on_clear_unused_tags_done)

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\aqt\taskman.py", line 62, in run_in_background
    self._on_closures_pending()

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\aqt\taskman.py", line 122, in _on_closures_pending
    closure()

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\aqt\taskman.py", line 71, in <lambda>
    lambda future: self.run_on_main(lambda: on_done(future))

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\aqt\taskman.py", line 90, in wrapped_done
    on_done(fut)

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\aqt\sync.py", line 97, in on_future_done
    mw.col.db.begin()

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\anki\dbproxy.py", line 36, in begin
    self._backend.db_begin()

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\anki\_backend.py", line 95, in db_begin
    return self._db_command(dict(kind="begin"))

  File "C:\Users\DELL\AppData\Local\AnkiProgramFiles\.venv\lib\site-packages\anki\_backend.py", line 111, in _db_command
    raise backend_exception_to_pylib(err)

anki.errors.DBError: DbError { info: "SqliteFailure(Error { code: Unknown, extended_code: 1 }, Some(\"cannot start a transaction within a transaction\"))", kind: Other }

Sentry link (for developers)

2

Hello,

Your Anki version is outdated, please update it. You can download it here: https://apps.ankiweb.net/. After downloading, simply run the downloaded file to update your application.

If the problem persists, try Tools > Check Database