Call service error No connection could be made because the target machine actively refused it.

[bravetree]

I use go-micro v4.9.0 to build server and client program in greeter. When I run them, the client output
{"id":"go.micro.client","code":500,"detail":"connection` error: dial tcp 10.0.0.1:64147: connectex: No connection could be made because the target machine actively refused it.","status":"Internal Server Error"}
Who can tell me how to solve it, thanks.