Generative Design doesn't respond. ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it

Hi All,

When I try to use Generative Design, it stucks and I can see a error as “ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it”
in refinery server log.

Could anybody help me?