请问我按照readme里面运行服务报错

[root@server ]$ go run main.go server.go
go: finding github.com/aceld/zinx/ziface latest
go: finding github.com/aceld/zinx latest
go: finding github.com/aceld/zinx/znet latest
go: downloading github.com/aceld/zinx v0.0.0-20191210110905-0a663b2d6b15
go: extracting github.com/aceld/zinx v0.0.0-20191210110905-0a663b2d6b15
build command-line-arguments: cannot load zinx/utils: cannot find module providing package zinx/utils

package main

import (
"github.com/aceld/zinx/znet"
)

func main() {
//1 创建一个server句柄
s := znet.NewServer()

//2 配置路由
s.AddRouter(0, &PingRouter{})

//3 开启服务
s.Serve()
}

package main

import (
"fmt"

"github.com/aceld/zinx/ziface"
"github.com/aceld/zinx/znet"
)

type PingRouter struct {
znet.BaseRouter
}

func (this *PingRouter) Handle(request ziface.IRequest) {
fmt.Println("recv from client : msgId=", request.GetMsgID(), ", data=", string(request.GetData()))

err := request.GetConnection().SendBuffMsg(0, []byte("ping...ping...ping"))
if err != nil {
fmt.Println(err)
}
}