FileServ exit with error code: 99

Hi,

I’m installing urbackup client on linux.

When I try to Make sure that the UrBackup client backend runs correctly, using
sudo urbackupclientbackend -v info
I get the following error:

ERROR: FileServ exit with error code: 99
Started UrBackupClient Backend…
Looking for old sessions… 0 sessions

And hence my client can not connect to the server (windows) when I start a backup, with error “Error starting backup”.
and log file also shows: Fileserv exit with error code: 99

Any help?