Problem with db path on Windows 11

[DThede]

Under Windows 11 (current build), the VACUUM query on a virtual fts5 database from within SQLiteStudio 3.4.17 and 3.4.20 as shown below fails, with the error message that is also shown. (The "/" or "" seem to make no difference.)
VACUUM "C:/DATA/databases/SQLiteData/db/intelligent_search.db";

The error messages were:
[22:57:21] Error while executing SQL query on database 'intelligent_search': unknown database "C:\DATA\databases\SQLiteData\db\intelligent_search.db"
[22:58:16] Error while executing SQL query on database 'intelligent_search': unknown database "C:/DATA/databases/SQLiteData/db/intelligent_search.db"

The database is at the specified path, as verified by File Explorer and as correctly found from the comparable Python3 code.

I have no troubles using VACUUM with non-fts5 virtual SQLite databases.
Any helpful thoughts or strategies (other than to use Python...)?

[pawelsalawa]

You're misusing the VACUUM. You should not pass file path as argument. Usually you just execute VACUUM without any arguments. It will do the job to the database you are executing it on.

The optional argument for VACUUM is for cases when you have ATTACH-ed another database and after attaching it has an alias name, which you can pass to the VACUUM, but that is not your use case.

[DThede]

Thank you for your prompt response. I'll review documentation again. I have been using VACUUM INTO to create a kind of back up, for at least two years. I don't recall ever using the plain "VACUUM" until recently. With the fts5 databases, my misuse has come to light.