Very good question.
The sqlite3 - 11 result code = SQLITE_CORRUPT indicates that the database file has been corrupted.
I can’t say I have ever done this before but after making a backup of the file, change the file extension from .aup3unsaved to .aup3 then follow the steps outlined in the first post here: Corrupt or Otherwise Broken Audacity Project Recovery
You may have to find a buddy with a Windows machine. 