Sina cloud git push reported an error.

  node.js, question

$ git push sae master
Counting objects: 3, done.
Writing objects: 100 percent (3/3), 198 bytes | 0 bytes/s, done.
Total 3 (delta 0), reused 0 (delta 0)
remote: Exporting git code …
remote: Uploading …
—–> Unable to select a buildpack
remote: {“Code”:1,”Error”:”build image failed: exit status 1.”}
Remote: Error: Failed to build mirror
remote: error: hook declined to update refs/heads/master

When using sina cloud, under the project, gitpush reported an error and asked for rescue.

Have you solved it, please