Kibana cannot reach epr.elastic.co even though "chainpem" is set

Hmm, If I add this Line, I simply cannot start KIBANA:

KIBANA.YML

server.host: 0.0.0.0

server.name: "atlassian-monitoring"

#server.ssl.enabled: false
#server.ssl.certificate: /path/to/your/server.crt
#server.ssl.key: /path/to/your/server.key

# xpack.security.http.ssl.client_authentication in Elasticsearch is set to required.
#elasticsearch.ssl.certificate: /path/to/your/client.crt
#elasticsearch.ssl.key: /path/to/your/client.key

logging:
  appenders:
    file:
      type: file
      fileName: /var/log/kibana/kibana.log
      layout:
        type: json
  root:
    appenders:
      - default
      - file
pid.file: /run/kibana/kibana.pid

# This section was automatically generated during setup.
elasticsearch.hosts: [https://172.30.68.65:9200]
elasticsearch.serviceAccountToken: AAEAAWVsYXN0aWMva2liYW5hL2Vucm9sbC1wcm9jZXNzLXRva2VuLTE3NTQ1NzU4MDEzOTc6YlFiSjIweUdUUmFoaUxxxxxxxxxxxx
elasticsearch.ssl.certificateAuthorities: [/var/lib/kibana/ca_1754575802535.crt]
xpack.fleet.outputs: [{id: fleet-default-output, name: default, is_default: true, is_default_monitoring: true, type: elasticsearch, hosts: [https://172.30.68.65:9200], ca_trusted_fingerprint: eef54df23ee933914ed2289595dcd2a1122c96eb2ad52ad4d15037xxxxxxxxxxx}]
xpack.encryptedSavedObjects.encryptionKey: e64a29e1f677f97d60678150xxxxxx
xpack.fleet.registryProxyUrl: your-nat-gateway.corp.net

I think

your-nat-gateway.corp.net

should be replaced with the real URL, which I have to clear with the staff.

LOG:

{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.358+02:00","message":"SIGTERM received - initiating shutdown","log":{"level":"INFO","logger":"root"},"process":{"pid":2544347,"uptime":8703.636928299}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.359+02:00","message":"Kibana is shutting down","log":{"level":"INFO","logger":"root"},"process":{"pid":2544347,"uptime":8703.637528487}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.366+02:00","message":"Stopping all plugins.","log":{"level":"INFO","logger":"plugins-system.standard"},"process":{"pid":2544347,"uptime":8703.644713593}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.370+02:00","message":"Un-registering task definition [endpoint:complete-external-response-actions] (if it exists)","log":{"level":"INFO","logger":"plugins.securitySolution.endpoint:complete-external-response-actions"},"process":{"pid":2544347,"uptime":8703.649082125}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.372+02:00","message":"Monitoring stats collection is stopped","log":{"level":"INFO","logger":"plugins.monitoring.monitoring.kibana-monitoring"},"process":{"pid":2544347,"uptime":8703.650975291}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.377+02:00","message":"Stopping the task poller","log":{"level":"INFO","logger":"plugins.taskManager"},"process":{"pid":2544347,"uptime":8703.655247555}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.532+02:00","message":"Removed this node from the Kibana Discovery Service","log":{"level":"INFO","logger":"plugins.taskManager"},"process":{"pid":2544347,"uptime":8703.810448205}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:10.532+02:00","message":"All plugins stopped.","log":{"level":"INFO","logger":"plugins-system.standard"},"process":{"pid":2544347,"uptime":8703.811177211}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:31.849+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2607500,"uptime":21.044248395}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:26:31.926+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2607500,"uptime":21.072488112},"trace":{"id":"d50d736180883551a1fff7a4b36e4a75"},"transaction":{"id":"d3179076f486aff2"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:12.018+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2607972,"uptime":4.218062466}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:12.063+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2607972,"uptime":4.248225266},"trace":{"id":"c2fcc79632f220f76c58142ee8a149c4"},"transaction":{"id":"0ff95ed42498d974"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:24.908+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2608112,"uptime":4.111550258}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:24.945+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2608112,"uptime":4.1370836},"trace":{"id":"c5f56280d9cc6ffb928f96e16af18f38"},"transaction":{"id":"f374ce74ec87cfb6"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:38.279+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2608203,"uptime":4.233646393}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:38.314+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2608203,"uptime":4.25393359},"trace":{"id":"2c6cbf0b3f62f3b4aeb4b5d074ad7773"},"transaction":{"id":"82434777b1c7039e"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:51.594+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2608285,"uptime":4.297194252}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:27:51.626+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2608285,"uptime":4.317538456},"trace":{"id":"d96bfa902ea125bac4fb5010c0aae7a0"},"transaction":{"id":"a07a8e3d15ab8f46"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:39:48.083+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2613891,"uptime":4.252897072}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:39:48.118+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2613891,"uptime":4.273605664},"trace":{"id":"900b871a313723eb181603ced93d693b"},"transaction":{"id":"1d32df56207ee4ea"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:40:01.020+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2613980,"uptime":4.224860082}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:40:01.057+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2613980,"uptime":4.249959755},"trace":{"id":"a92c1fc7bad82cdf1121200a8f1e4e25"},"transaction":{"id":"5662bb329f45966a"}}
{"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:40:14.233+02:00","message":"Kibana is starting","log":{"level":"INFO","logger":"root"},"process":{"pid":2614120,"uptime":4.179296012}}
{"service":{"node":{"roles":["background_tasks","ui"]}},"ecs":{"version":"8.11.0"},"@timestamp":"2025-08-11T19:40:14.269+02:00","message":"Kibana process configured with roles: [background_tasks, ui]","log":{"level":"INFO","logger":"node"},"process":{"pid":2614120,"uptime":4.204403106},"trace":{"id":"17ffd7f60a45d0f2165bb1c44010c6a6"},"transaction":{"id":"af46e10adacdee37"}}