无法导入cloud.google.com/go/storage

I want to import google cloud storage but failed. what should I do?

I used auto-import in Goland(go get -t cloud.google.com/go/storage) & go get -u cloud.google.com/go/storage in teminal.

They both returned this error: Fetching https://cloud.google.com/go/storage?go-get=1 https fetch failed: Get https://cloud.google.com/go/storage?go-get=1: dial tcp 172.217.160.110:443: i/o timeout package cloud.google.com/go/storage/...: unrecognized import path "cloud.google.com/go/storage" (https fetch: Get https://cloud.google.com/go/storage?go-get=1: dial tcp 172.217.160.110:443: i/o timeout)

package main

import (
    "cloud.google.com/go/storage"
    "context"
    "encoding/json"
    "fmt"
    "github.com/pborman/uuid"
    "gopkg.in/olivere/elastic.v3"
    "io"
    "log"
    "net/http"
    "reflect"
    "strconv"
    "strings"
)