Failed with error: Could not read from remote repository.

λ git push
Warning: Permanently added the RSA host key for IP address ‘52.74.223.119‘ to the list of known hosts.
Counting objects: 21, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (18/18), done.
Writing objects: 100% (21/21), 3.49 KiB | 0 bytes/s, done.
Total 21 (delta 6), reused 0 (delta 0)
remote: Resolving deltas: 100% (6/6), completed with 4 local objects.
To github.com:zengqianGit/djangostart.git
   d42837d..431cc97  master -> master