Unable to use user_filter in gitlab ee

gitlab_rails[‘ldap_servers’] = YAML.load <<-‘EOS’
main: # ‘main’ is the GitLab ‘provider ID’ of this LDAP server
label: ‘GitLab AD’
host: ‘#_your_ldap_server
port: 389
uid: ‘sAMAccountName’
bind_dn: ‘CN=GitLab AD,CN=Managed Service Accounts,OU=UserAccounts,DC=NAPROD,DC=wavesco,DC=com’#_the_full_dn_of_the_user_you_will_bind_with
password: '
encryption: ‘plain’ # “start_tls” or “simple_tls” or “plain”
verify_certificates: true
active_directory: true
base: ‘DC=NAPROD,DC=wavesco,DC=com’
user_filter: ‘(|memberOf:1.2.840.113556.1.4.1941:=CN=GP-APP-GITLAB,OU=APPGROUPS,OU=Groups,DC=NAPROD,DC=wavesco,DC=com)’
group_base: ‘’
admin_group: ‘GP-APP-GITLAB’

I am getting error when i use user_filter and when i remove user_filter it shows all the users and by using user_filter i want to filter the user access but in my Gitlab EE user_filter is not working its giving error

There was an error running gitlab-ctl reconfigure:

(): found character that cannot start any token while scanning for the next token at line 12 column 1

please suggest my how can i filter the user in Gitlab ee