无法将泊坞窗图像推送到docker集线器

这是我试图推向docker枢纽的图像

REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE smiduthu/has_test latest 2e0d0ba5412a 27 minutes ago 765.4 MB 

我在做docker push smiduthu/has_test 。

我尝试推送图像时发生以下错误

 The push refers to a repository [smiduthu/has_test] (len: 1) 2e0d0ba5412a: Image push failed FATA[0002] Error pushing to registry: token auth attempt for registry https://registry-1.docker.io/v2/: https://auth.docker.io/ =repository%3Asmiduthu%2Fhas_test%3Apull%2Cpush&service=registry.docker.io request failed with status: 401 Unauthorized 

问题是什么 ？