LDAP Configuration - ELK 8.8.1

[Manal_A]

I'm currently configuring the LDAP on my coordinator & Kibana nodes (8.8.1)
Here are the steps I've taken:

1. Tested the connection with the LDAP server on my coordinator, and it's successful.
2. Configured my elasticsearch.yml and modified the rolemapping.yml file.
   Here's the conf i added :

xpack.security.authc.realms.ldap.ldap1:
 order: 1
 url: "ldap://X.X.X.X"
 bind_dn: "cn=X,ou=X,dc=X,dc=X,dc=X"
 bind_password: "XXXXXXX"
 user_search.base_dn: "ou=ctech,dc=zadm,dc=lab,dc=acms"
 user_search.filter: "(cn={0})"
 group_search.base_dn: "dc=X,dc=X,dc=X"
 group_search.filter: "(member={0})"
 files:
    role_mapping: "/role_mapping.yml"
 unmapped_groups_as_roles: false

3. Checked the Elasticsearch logs, and there are no errors.
4. In Kibana, here's the configuration I added :

elasticsearch.username: "cn=X,ou=Xdc=X,dc=X,dc=X"
elasticsearch.password: "XXXXXXXX"
xpack.security.authc.providers:
  - ldap
  - basic

5. Here's the error I encountered:

[elasticsearch-service] Unable to retrieve version information from Elasticsearch nodes. security_exception
 kibana[33260]:         Root causes:
 kibana[33260]:                 security_exception: unable to authenticate user [cn=X,ou=X,dc=X,dc=X,dc=X] for REST request [/_nodes?filter_path=nodes.*.version%2C>
kibana[33260]: [2024-01-05T10:24:10.351+01:00][INFO ][plugins.screenshotting.chromium] Browser executable: /usr/share/kibana/node_modules/@kbn/screenshotting-plugin/chromium/headless_s>