Golang移动软件包安装问题

Question

I am trying to install go package for mobile using,

desktop:~$ go get golang.org/x/mobile/cmd/gomobile

But it gives this error

package golang.org/x/mobile/cmd/gomobile: unrecognized import path "golang.org/x/mobile/cmd/gomobile" (https fetch: Get https://golang.org/x/mobile/cmd/gomobile?go-get=1: http: error connecting to proxy http://192.168.0.136:8080/: dial tcp 192.168.0.136:8080: getsockopt: connection refused)