introspection_request_headers value?

[scoutinhobh]

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Describe the bug

How does one set introspection_request_headers via env vars? Also do we use Bearer or Basic?

Reproducing the bug

How does one set introspection_request_headers

Relevant log output

No response

Relevant configuration

No response

Version

oryd/oathkeeper:v0.39.0

On which operating system are you observing this issue?

No response

In which environment are you deploying?

No response

Additional Context

No response

[scoutinhobh]

18:30:39,108 WARN [org.keycloak.events] (default task-5) type=INTROSPECT_TOKEN_ERROR, realmId=testrealm, clientId=null, userId=null, ipAddress=172.17.147.97, error=invalid_request, detail='Authentication failed.'