Git push提示pre-receive hook declined

auto@ubuntu:~/src/SOC/
git push
Counting objects: 5, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (5/5), done.
Writing objects: 100% (5/5), 435 bytes | 0 bytes/s, done.
Total 5 (delta 4), reused 0 (delta 0)
remote: GitLab: You are not allowed to push code to protected branches on this project.
To git@gitlab:SOC.git
 ! [remote rejected] develop-yexf -> develop-yexf (pre-receive hook declined)
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to ‘git@gitlab:SOC.git‘

auto@ubuntu:~/src/SOC/
$ git branch 
* develop-yexf
  master

auto@ubuntu:~/src/SOC/
git branch -d master 
Deleted branch master (was 66158d1).

auto@ubuntu:~/src/SOC/
$ git push
Counting objects: 5, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (5/5), done.
Writing objects: 100% (5/5), 435 bytes | 0 bytes/s, done.
Total 5 (delta 4), reused 0 (delta 0)
remote: 
remote: To create a merge request for develop-yexf, visit:
remote:   http://scm-gitlab/SOC/merge_requests/new?merge_request%5Bsource_branch%5D=develop-yexf
remote: 
To git@scm-gitlab:SOC.git
   66158d1..b5392b8  develop-yexf -> develop-yexf

auto@ubuntu:~/src/SOC/
$ git branch 
* develop-yexf