Problems with integrating with Authelia using oidc

[dbalan]

I've got miniflux running with following settings

      DEBUG = 1;
      CREATE_ADMIN = 0;
      LISTEN_ADDR = "${listenAddr}";
      OAUTH2_USER_CREATION = 1;
      DISABLE_LOCAL_AUTH = "true";
      BASE_URL = "https://${domain}";
      OAUTH2_PROVIDER = "oidc";
      OAUTH2_CLIENT_ID = "miniflux";
      OAUTH2_CLIENT_NAME = "miniflux";
      OAUTH2_CLIENT_SECRET_FILE = config.sops.secrets.miniflux_oidc_secret.path;
      OAUTH2_REDIRECT_URL = "https://miniflux.${domain}/oauth2/oidc/callback";
      OAUTH2_OIDC_DISCOVERY_ENDPOINT = "https://auth.${domain}";

and client configured in authelia with

 - authorization_policy: one_factor
      client_id: miniflux
      client_secret: $pbkdf2-sha512$310000$T0VfJnwaP3HTadgL5bxwbQ$1rYq6KYb34pqX8LHjDNf8A2xt3TxwwNvxtI8ixwGPt7/eD4RsS7kuFQ/g.cR4EO/4sXTP40e/zdfTJk82NiUGg
      pre_configured_consent_duration: 1M
      redirect_uris: https://reader.planet-express.in/oauth2/oidc/callback
      scopes:
      - openid
      - profile
      - groups
      - email
      token_endpoint_auth_method: client_secret_basic

But the authentication fails with:

 level=DEBUG msg="Incoming request" client_ip=2a02:8106:27:5700:1ac0:4dff:fe61:939f request.method=GET request.uri=/oauth2/oidc/redirect request.protocol=HTTP/1.1 request.execution_time=18.268636ms
Nov 02 17:01:29 bessie miniflux[249645]: level=WARN msg="Unable to get OAuth2 profile from provider" provider=oidc error="oidc: failed to exchange token: oauth2: \"invalid_client\" \"Client authentication failed (e.g., unknown client, no client authentication included, or unsupported authentication method). The request was determined to be using 'token_endpoint_auth_method' method 'none', however the OAuth 2.0 client registration does not allow this method.\""

Does anyone know why is miniflux failing here?

[Kuchenmampfer]

Idk, but I just got it working with the following settings:

# Miniflux
  OAUTH2_PROVIDER=oidc
  OAUTH2_CLIENT_ID=miniflux
  OAUTH2_CLIENT_SECRET=abcde
  OAUTH2_OIDC_DISCOVERY_ENDPOINT=https://authelia.kuchenmampfer.de
  OAUTH2_OIDC_PROVIDER_NAME=Authelia
  OAUTH2_REDIRECT_URL=https://mash.kuchenmampfer.de/miniflux/oauth2/oidc/callback
  OAUTH2_USER_CREATION=1

and

# Authelia
  - id: miniflux
    description: Miniflux
    secret: '$argon2id$v=19$m=65536,t=3,p=abcde'
    public: false
    redirect_uris:
      - https://mash.kuchenmampfer.de/miniflux/oauth2/oidc/callback
    scopes:
      - openid
      - profile
      - groups
      - email