Gitlab API is not accessible - pre-receive hook declined

We have a git repository in our TFS server, that we want to migrate to our GitLab server. This is a new repo on gitlab so there is nothing configured. I own it. I have added gitlab as origin, and tried to push.

So I should have permissions.

C:\java_dev\a\a-pcf\source>git push -u origin
Counting objects: 19157, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (11578/11578), done.
Writing objects: 100% (19157/19157), 105.16 MiB | 303.00 KiB/s, done.
Total 19157 (delta 7902), reused 16922 (delta 5719)
remote: Resolving deltas: 100% (7902/7902), done.
remote: GitLab: API is not accessible
To https://gitlab.d.com/services/rfs/a1/a-main.git
 ! [remote rejected]   develop-pcf -> develop-pcf (pre-receive hook declined)
error: failed to push some refs to 'https://gitlab.d.com/services/rfs/a1/a-main.git'

Our GitLab is: GitLab Enterprise Edition 11.3.6-ee 8d9cf176