Proxmox OIDC with Authelia error "OpenID redirect failed request failed 500"

[creperus]

Hello,

I'm trying to use Authelia as a realm for the authentication on my proxmox. I use it for every service I have with traefik as proxy.

I added OIDC handling in the authelia conf file, it's running without errors.

I then added a realm to my proxmox, with these settings



When I try lo log in I have the error "OpenID redirect failed request failed 500"

Does someone know what's wrong here ?

Thanks a lot

Here's my authelia conf :

identity_providers:
  oidc:
    hmac_secret: '.************'
    jwks:
      - key_id: 'example'
        algorithm: 'RS256'
        use: 'sig'
        key: |
          -----BEGIN PRIVATE KEY-----
          MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQDkk1GapsKGAcFT
          ......
          uVES6mj5GBKtmWAJVEsNNw==
          -----END PRIVATE KEY-----
#        key: {{ secret "/config/secrets/oidc/jwks/private.pem" | mindent 10 "|" | msquote }}
    authorization_policies:
      policy_name:
        default_policy: one_factor
        rules:
          - subject: ["group:admin"]
            policy: one_factor
    claims_policies:
      policy_name:
        id_token_audience_mode: 'specification'
        custom_claims:
          groups:
            attribute: groups
    clients:
      - client_id: 'proxmox'
        client_name: 'Proxmox'
        client_secret: '$pbkdf2-sha512$.************'
        public: false
        authorization_policy: 'one_factor'
        require_pkce: true
        pkce_challenge_method: 'S256'
        redirect_uris:
          - 'https://proxmox.************.com'
        scopes:
          - 'openid'
          - 'profile'
          - 'email'
        userinfo_signed_response_alg: 'none'
        token_endpoint_auth_method: 'client_secret_basic'