Bad response from token request after team creation auth

Ok, i'am gonna try updating gitlab to latest 8.5. Should i update mattermost to v2 too ?

Mattermost
1.4.0

GitLab
8.4.4

GitLab Shell
2.6.10

GitLab API
v3

Git
2.6.2

Ruby
2.1.8p440

Rails
4.2.5.1