Broken after attempt to update

Hi all,

I tried to update Duplicati, but when I did that the browser could not reach port 8200 anymore, so I tried to restart Duplicati with the follow error

A serious error occurred in Duplicati: System.Exception: Failed to create, open or upgrade the database.
Error message:
The database has version 6 but the largest supported version is 4.

This is likely caused by upgrading to a newer version and then downgrading.
If this is the case, there is likely a backup file of the previous database version in the folder C:\Users\Liveserver\Ap
pData\Local\Duplicati.
at Duplicati.Server.Program.GetDatabaseConnection(Dictionary`2 commandlineOptions)
at Duplicati.Server.Program.RealMain(String _args)

Where can I restore the .sqlite database in the backup?

Solved

Just reinstalled it