How do I fix sqlite error 5: 'database is locked' in UWP enviroment ?

See more:

C#

SQL

UWP

When trying to update a table record in SQLite running in UWP enviroment I got the above mentioned error message.

References included:
Microsoft.Data.Sqlite
Microsoft.NETCore.UniversalWindowsPlatform

C# code follows ... any help will be welcome !!!

What I have tried:

private bool SaveConfig()
{
    using (SqliteConnection db = new SqliteConnection("Filename=" + CommonVars.filePath))
    {
        using (SqliteCommand SQLcmd = new SqliteCommand("UPDATE Config SET DBversion = 2 WHERE DBversion = 1", db))
        {
            db.Open();
            try
            {
                SQLcmd.ExecuteNonQuery();
                db.Close();
                return true;
            }
            catch (SqliteException e)
            {
                // Show error and return failed...
                db.Close();
                Console.Write("Error: %s\n", e);
                return false;
            }
        }
    }
}