License error Discovery Studio

Following error is shown while working with Discovery Studio :

lmstat -a results:

lmstat - Copyright (c) 1989-2015 Flexera Software LLC. All Rights Reserved.

Flexible License Manager status on Wed 11/22/2023 18:40

[Detecting lmgrd processes...]

lmgrd is not running: License server machine is down or not responding. (-96,7:11001 "WinSock: Host not found (HOST_NOT_FOUND)")

I would appreciate if somebody could help me providing some suggestions to solve this. Thanks.