Viewing files in RAW shows empty screen after upgrade to 8.6.1

Summary

Viewing files in RAW shows an empty, new sceen. First reported with .asc files but a widespread problem for any file on out gitlab server.

This is an installation from source.

Steps to reproduce

Open any file in any repository (on our server) and click on RAW

Expected behavior

A new screen opens, showing the RAW output of the file. In case of an ASCIIDOC file, the rendered output (due to the chrome plugin). We use ASCIIDOC files in all of our project for documentation purposes.

Relevant logs and/or screenshots

nothing relevant to see in /home/git/gitlab, /home/git/gitlab-shell or /var/log/nginx

Output of checks

Results of GitLab Application Check

All green (2600+ projects, too much output to paste)

Results of GitLab Environment Info

System information System: Debian 7.9 Current User: git Using RVM: no Ruby Version: 2.1.2p95 Gem Version: 2.2.2 Bundler Version:1.7.2 Rake Version: 10.5.0 Sidekiq Version:4.0.1

GitLab information Version: 8.6.1 Revision: a96d737b Directory: /home/git/gitlab DB Adapter: mysql2 URL: https://git.ikdoeict.be HTTP Clone URL: https://git.ikdoeict.be/some-group/some-project.git SSH Clone URL: git@git.ikdoeict.be:some-group/some-project.git Using LDAP: yes Using Omniauth: no

GitLab Shell Version: 2.6.12 Repositories: /home/git/repositories/ Hooks: /home/git/gitlab-shell/hooks/ Git: /usr/local/bin/git

Possible fixes

Any help would be very appreciated