Fix the SSOSettings Value of "/var/opt/gitlab/mattermost/config.json" is null.
It fixes that the SSOSettings Value of "/var/opt/gitlab/mattermost/config.json" is null. But "Log in with GitLab" still failed.
The error message in "/var/log/gitlab/mattermost/current" is like following.
2015-08-24_09:55:03.34889 [08/24/15 09:55:03] [EROR] /login/gitlab/complete:AuthorizeOAuthUser code=500 rid=xxxxxxxxxx uid= ip=xxx.xxx.xxx.xxx Bad token type [details: token_type=]
Edited by GitLab Release Tools Bot