Unable to access Kibana monitoring ui

Hi,

I am using the 6.3 plugin, and I have the following rule;

readonlyrest:
  enable: true
  access_control_rules:
    - name: admin
      type: allow
      indices: ["*"]
      auth_key_sha256: 8da193366e1554c08b2870c50f737b9587c3372b656151c4a96028af26f5133
      actions: ["*"]

I am able to use Kibana, it prompts for credentials, and everything is working except monitoring ui. When I open monitoring ui, I am getting error like below;

kibana_error
Why is this happening? How can I fix this?

Thank you

The root cause of a lot of issues with non OSS kibana 6.3.x is the fact that xpack.security.enable: false does not work anymore.

Have you noticed?