Download button produces JSON, no archive.zip

When I click on the download button on any repo I get a content-type: application/json response. This just started since the latest update. I find no info in the logs for any of the gitlab services as to why the zip is not created and sending this JSON instead.

Example Request:
https://example.com/naveoss/naveoss-os/repository/archive.zip

Response:
{"RepoPath":"/var/opt/gitlab/git-data/repositories/naveoss/naveoss-os.git","ArchivePrefix":"naveoss-os-master-3e64a127b6262e0f2a55d4cd910a0fe2b90b4485","ArchivePath":"/opt/gitlab/embedded/service/gitlab-rails/tmp/repositories/naveoss-os.git/naveoss-os-master-3e64a127b6262e0f2a55d4cd910a0fe2b90b4485.zip","CommitId":"3e64a127b6262e0f2a55d4cd910a0fe2b90b4485"}

Package: gitlab-ce
Priority: extra
Section: misc
Installed-Size: 998519
Maintainer: GitLab B.V.
Architecture: amd64
Version: 8.1.2-ce.0
Depends: openssh-server
Conflicts: gitlab-ee, gitlab
Replaces: gitlab-ee, gitlab
Filename: pool/trusty/main/g/gitlab-ce/gitlab-ce_8.1.2-ce.0_amd64.deb