Guest access error

I’m install GitLab CI 9.0 on newly installed Ubuntu 16.04.2 Server (x64). Create first project and project group, add user to this group with “Guest” role, and, after i login as this user (with guest role) and open project - i got error “Something went wrong on our end” and i can see files and folders list on repository, but can’t open any file or folder…

Details on attached image.

How i can fix it or what i do wrong?

Thanks!

Report a ticket at Gitlab. This seems to be a bug or something.

Thank you!