问golang 查询对象列表失败是怎么回事？

	//部分核心代码
	v, _, err := c.Bucket.Get(context.Background(), nil)
	if err != nil {
		fmt.Println(err)
	}

	for _, c := range v.Contents {
		fmt.Printf("%s, %d\n", c.Key, c.Size)
	}

后台返回的错误：

GET https://pubilc-websocket-1300852544.cos.ap-guangzhou.myqcloud.com/: 403 AccessDenied(Message: Access Denied., RequestId: NWVkZjc1NGVfYzdhMzNiMGFfNDU4YV80NmEzZjQ4, TraceId: OGVmYzZiMmQzYjA2OWNhODk0NTRkMTBiOWVmMDAxODc0OWRkZjk0ZDM1NmI1M2E2MTRlY2MzZDhmNmI5MWI1OTBjYzE2MjAxN2M1MzJiOTdkZjMxMDVlYTZjN2FiMmI0OTlkNmIzZWM1YzEwMjhiOTk0NjRmZDYzOTUyN2FmZDU=)

注：该对象存储读写都是公共的