I cannot longer access the graylog web interface

Graylog Central (peer support)
1

1. Describe your incident:
Graylog web interface is no longer accessible, server is listening on port 9000, gralog-server.service is running and so mongodb

2. Describe your environment:

  • OS Information: Ubuntu 22.04

  • Package Version: Graylog 6.1

  • Service logs, configurations, and environment variables:
    I see these message on server.log
    2025-06-17T15:24:34.013Z ERROR [VersionProbe] Unable to retrieve version from indexer node: Hostname tigraylog.toastmasters.local not verified:
    certificate: sha256/mR/egK1PWtDrXsthxD0ZynAsLkWzsnF3vJbZrPe4GS8=
    DN: CN=tigraylog
    subjectAltNames: [127.0.0.1, 0:0:0:0:0:0:0:1, 10.1.30.75, localhost, xxxxx, ip6-localhost]. - Hostname xxxxxx not verified:
    certificate: sha256/mR/egK1PWtDrXsthxD0ZynAsLkWzsnF3vJbZrPe4GS8=
    DN: CN=tigraylog
    subjectAltNames: [127.0.0.1, 0:0:0:0:0:0:0:1, 10.1.30.75, localhost, xxxxxx, ip6-localhost].

3. What steps have you already taken to try and solve the problem?
Restarted the server didn’t help. I try to find post with some help but nothing seems to match my issue.

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