i use Skoruba IdentityServer4 fro my projects identity,when i run Skoruba IdentityServer4 github i see this message
and check used port in cmd with yhis code
netstat -a -b
but 9000 port dont exsist in used port.
This problem occurs when you are in a country like Cuba, North Korea, Iran and Syria, etc. that are under sanctions. You must use vpn