The above code translates as: (11) SQLITE_CORRUPT
The SQLITE_CORRUPT result code indicates that the database file has been corrupted. See the How To Corrupt Your Database Files for further discussion on how corruption can occur: File Locking And Concurrency In SQLite Version 3
The steps outlined in the first post here: Corrupt or Otherwise Broken Audacity Project Recovery can be used in many(most) cases to recover much of all of the original project. Unfortunately, they don’t always work. When this happens, you need to fall back to your backup.