Trying to set up hpa in a kind context -- metrics not exposed

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Cluster information:

Kubernetes version: v1.24.4
Cloud being used: kind-kind
Installation method: kubectl create/apply
Host OS: Linux 5.14.0 Ubuntu 20.04

I want to investigate the autoscaling of my application in a kind context.
For this, I deployed my app, prometheus, and the prometheus adapter into a local kind cluster.

I register and update metrics, but they do not show up in the output of:

k --raw /apis/custom.metrics.k8s.io/v1beta1 | jq .

In the log of the custom-metrics-apiserver, I have 404 errors for POST requests to https://10.96.0.1:443/apis/authorization.k8s.io/v1beta1/subjectaccessreviews
– these use a token as described in ’ Delegated Token Authentication’.

In the same log, I also have Info records for GET requests for my exported metrics, part of which successful (200), other failing (500).

Finally, I have lines such as:

opfeed> grep 'Internal ' ~/tmp/go/adapter/logk14 | sort -u
logging error output: "Internal Server Error: \"/apis/custom.metrics.k8s.io/v1beta1/namespaces/categorizers/pods/%2A/categorizer_duration?labelSelector=app.kubernetes.io%2Finstance%3Ddevelopment-openphish%2Capp.kubernetes.io%2Fname%3Ddevelopment-openphish\": the server could not find the requested resource"
logging error output: "Internal Server Error: \"/apis/custom.metrics.k8s.io/v1beta1\": the server could not find the requested resource"
logging error output: "Internal Server Error: \"/openapi/v2\": the server could not find the requested resource"
logging error output: "Internal Server Error: \"/openapi/v3\": the server could not find the requested resource"

Sources:

Where should I look?
Thanks