Horde-Turba DB Error 9.5.1

[Marco Cristofanilli]

The Horde-Turba not connect to database:

The errors are:
- DB Error: no such field
- Source not found

Configuration:
$conf['sql']['database'] = 'C:\inetpub\vhosts\webmail\horde\db\horde.db';
$conf['sql']['mode'] = 0666;
$conf['sql']['charset'] = 'utf-8';
$conf['sql']['phptype'] = 'sqlite';