My anki doesn't work, and shows the following error. I do not want to lose my data. Does anyone know how to debug it?

An error occurred. It may have been caused by a harmless bug,
or your deck may have a problem.
To confirm it’s not a problem with your deck, please run Tools > Check Database.
If that doesn’t fix the problem, please copy the following
into a bug report:
Traceback (most recent call last):
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.webview”, line 152, in _linkHandler
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.toolbar”, line 74, in _linkHandler
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.toolbar”, line 97, in _syncLinkHandler
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 601, in onSync
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 280, in loadCollection
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 258, in unloadProfile
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.profiles”, line 122, in save
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/anki.db”, line 39, in execute
sqlite3.OperationalError: unable to open database file
Traceback (most recent call last):
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.progress”, line 69, in handler
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 111, in setupProfile
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 235, in loadProfile
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 601, in onSync
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 280, in loadCollection
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.main”, line 258, in unloadProfile
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/aqt.profiles”, line 122, in save
File “C:\cygwin\home\dae\win\build\pyi.win32\anki\outPYZ1.pyz/anki.db”, line 39, in execute
sqlite3.OperationalError: unable to open database file

https://faqs.ankiweb.net/when-problems-occur.html

You may be able to recover by renaming your prefs21.db file: Managing Files - Anki Manual