Can't launch secure API with Spring Boot and Keycloak as authorization server

I can’t access my protected APIs from Grafana. I have a resource server running on Spring Boot running OAuth2. This server has a role management for access to APIs. Users and roles are managed on Keycloak.

I have successfully connected my Keycloak users on Grafana with OAuth2. But I would like to be able to launch my APIs requests from Grafana. I have tested with the Infinity plugin but it doesn’t work.

Spring Boot config

Grafana Infinity plugin config