Error when adding new cards

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Anki 2.1.35 (84dcaa86) Python 3.8.0 Qt 5.14.2 PyQt 5.14.2
Platform: Windows 10
Flags: frz=True ao=False sv=1
Add-ons, last update check: 2020-11-13 14:00:53

Caught exception:
Traceback (most recent call last):
File “aqt\”, line 493, in handler
File “aqt\”, line 483, in
File “aqt\”, line 191, in _addCards
File “aqt\”, line 178, in addNote
File “anki\”, line 345, in add_note
File “anki\”, line 339, in add_note
File “anki\”, line 267, in _run_command
anki.rsbackend.DBError: DBError { info: “SqliteFailure(Error { code: CannotOpen, extended_code: 14 }, Some(“unable to open database file”))”, kind: Other }

Anytime i try to add a new card i get this error. I have tried everything, restarting holding shift, etc. I even opened up backups but I just cannot add a new card. Plz and help.

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