People forget to compile their assets, start after doing that.

doc/install/installation.md

@@ -302,18 +302,16 @@ Check if GitLab and its environment are configured correctly:
 
     sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production
 
+## Compile assets
+
+    sudo -u git -H bundle exec rake assets:precompile RAILS_ENV=production
+
 ## Start Your GitLab Instance
 
     sudo service gitlab start
     # or
     sudo /etc/init.d/gitlab restart
 
-
-## Compile assets
-
-    sudo -u git -H bundle exec rake assets:precompile RAILS_ENV=production
-
-
 # 7. Nginx
 
 **Note:**