signature_error in the Plug

[patric-vinicios]

I configured my :keycloak like: config :keycloak, realm: "Test", site: "http://localhot:8081", client_id: "api1", client_secret: "client_secret"

and my Plug like:

config :keycloak, Keycloak.Plug.VerifyToken, hmac: "RSA256"

But when I send any request, it returns:

401 -> { "error": "signature_error" }