Issue Gitlab authentication LDAP

I did all the instructions from the GitLab Documentation (Integrate LDAP with GitLab) but when I try to log with a ldap account I keep getting this error "Could not authenticate you from Ldapmain because “Invalid credentials for X”.

Here is the configuration of my file ‘gitlab.rb’:

gitlab_rails[‘ldap_enabled’] = true
gitlab_rails[‘prevent_ldap_sign_in’] = false

###! remember to close this block with ‘EOS’ below
gitlab_rails[‘ldap_servers’] = YAML.load <<-‘EOS’ main:

‘main’ is the GitLab ‘provider ID’ of this LDAP server

label: ‘LDAP’
host: ‘XX.XX.XX’
port: 389 uid: ‘uid’
bind_dn: ‘CN=Administrateur,CN=XX,DC=XX,DC=XX’
password: ‘XX’
encryption: ‘plain’
verify_certificates: true
active_directory: true

and when I do gitlab-ctl reconfigure and gitlab-rake gitlab:ldap:check I don’t get any error. Can somebody help me ?