Recipe Compile Error with LDAP configuration

Hi,

I'm configuring GitLab with LDAP on a Linux VM (Fedora) and I've this error when I run 'gitlab-ctl reconfigure' :

Starting Chef Client, version 12.12.15
resolving cookbooks for run list: ["gitlab"]
Synchronizing Cookbooks:
  - gitlab (0.0.1)
  - package (0.1.0)
  - registry (0.1.0)
  - consul (0.0.0)
  - runit (0.14.2)
Installing Cookbook Gems:
Compiling Cookbooks...

================================================================================
Recipe Compile Error in /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb
================================================================================

Psych::SyntaxError
------------------
(<unknown>): found character that cannot start any token while scanning for the next token at line 1 column 1

Cookbook Trace:
---------------
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/libraries/gitlab.rb:125:in `block in from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/package/libraries/config_mash.rb:28:in `auto_vivify'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/libraries/gitlab.rb:125:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/config.rb:23:in `from_file'
  /opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/recipes/default.rb:26:in `from_file'

Relevant File Content:
----------------------
/opt/gitlab/embedded/cookbooks/cache/cookbooks/gitlab/libraries/gitlab.rb:

118:      'geo_primary',
119:      'geo_secondary',
120:    ].freeze
121:
122:    class << self
123:      def from_file(_file_path)
124:        # Allow auto mash creation during from_file call
125>>       ConfigMash.auto_vivify { super }
126:      end
127:
128:      def method_missing(method_name, *arguments)
129:        # Give better message for NilClass errors
130:        # If there are no arguements passed, this is a 'GET' call, and if
131:        # there is no matching key in the configuration, then it has not been set (not even to nil)
132:        # and we will output a nicer error above the exception
133:        if arguments.length == 0 && !configuration.has_key?(method_name)
134:          message = "Encountered unsupported config key '#{method_name}' in /etc/gitlab/gitlab.rb."

Platform:
---------
x86_64-linux


Running handlers:
Running handlers complete
Chef Client failed. 0 resources updated in 02 seconds

My gitlab.rb :

gitlab_rails['ldap_enabled'] = true

###! **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: 'hostname'
		port: 389
		uid: 'sAMAccountName'
		bind_dn: 'cn=aaaa,dc=bbbbbb,dc=fr'
		password: 'password'
		encryption: 'plain' # "start_tls" or "simple_tls" or "plain"
#     verify_certificates: true
#     ca_file: ''
#     ssl_version: ''
#		active_directory: true
#     allow_username_or_email_login: false
#     block_auto_created_users: false
		base: 'ou=people,dc=bbbbb,dc=fr'
		attributes:
			username: 'uid'
			email: 'mails'
#       name:       'sn'
			first_name: 'givenName'
			last_name: 'sn'
#     ## EE only
#     group_base: ''
#     admin_group: ''
#     sync_ssh_keys: false
EOS

I really don't know where is the problem. Anyone could help me ?

Thanks in advance :-)

Nicolas