DONE FAIL 0210 Could not open item passed to SAVI for scanning

Hi, I have been using Sophos AV scan "SAV Dynamic Interface" since last year.

And It was working before but now it stops working with below error message

Message: Falied to scan \\127.0.0.1\TmpFile\Upload\326c1b26-6390-4794-8c87-3129a8353f1f\upload\54343-0.pdf               : DONE FAIL 0210 Could not open item passed to SAVI for scanning  Type: Incite.Antivirus.ScanException  Class: Incite.Antivirus.Client  Method: ScanPath  Stack Trace:      at Incite.Antivirus.Client.ScanPath(String filepath, String request)     at Incite.Antivirus.SophosScanner.Scan(String fileForScan)     at

just wonder who knows how to resolve this.

Thanks.

JK