Truenas Scale behind NPM/Authentik

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I need a little help as follows:

I am trying to access truenas behind nginx proxy manager (reverse proxy) with authentik (2FA using an authentication code).

Without authentik, things work fine but with, I get stuck in the “connecting to truenas” screen.

I use port 444 to forward to. Below is my nginx config in NPM.

Anyone any clue what I need to change to be redircted to the login page? Many thanks!

# Increase buffer size for large headers
# This is needed only if you get 'upstream sent too big header while reading response
# header from upstream' error when trying to access an application protected by goauthentik
proxy_buffers 8 16k;
proxy_buffer_size 32k;

# Make sure not to redirect traffic to a port 4443
port_in_redirect off;

location / {
    proxy_pass          $forward_scheme://$server:$port;
    proxy_set_header Host $host;

    ##############################
    # authentik-specific config
    ##############################
    auth_request     /outpost.goauthentik.io/auth/nginx;
    error_page       401 = @goauthentik_proxy_signin;
    auth_request_set $auth_cookie $upstream_http_set_cookie;
    add_header       Set-Cookie $auth_cookie;

    # translate headers from the outposts back to the actual upstream
    auth_request_set $authentik_username $upstream_http_x_authentik_username;
    auth_request_set $authentik_groups $upstream_http_x_authentik_groups;
    auth_request_set $authentik_entitlements $upstream_http_x_authentik_entitlements;
    auth_request_set $authentik_email $upstream_http_x_authentik_email;
    auth_request_set $authentik_name $upstream_http_x_authentik_name;
    auth_request_set $authentik_uid $upstream_http_x_authentik_uid;

    proxy_set_header X-authentik-username $authentik_username;
    proxy_set_header X-authentik-groups $authentik_groups;
    proxy_set_header X-authentik-entitlements $authentik_entitlements;
    proxy_set_header X-authentik-email $authentik_email;
    proxy_set_header X-authentik-name $authentik_name;
    proxy_set_header X-authentik-uid $authentik_uid;

    # This section should be uncommented when the "Send HTTP Basic authentication" option
    # is enabled in the proxy provider
    #auth_request_set $authentik_auth $upstream_http_authorization;
    #proxy_set_header Authorization $authentik_auth;
}

# all requests to /outpost.goauthentik.io must be accessible without authentication
location /outpost.goauthentik.io {
    # When using the embedded outpost, use:
    proxy_pass              https://###.###.#.###:###/outpost.goauthentik.io;
    # For manual outpost deployments:
    # proxy_pass              http://outpost.company:9000;

    # Note: ensure the Host header matches your external authentik URL:
    proxy_set_header        Host $host;

    proxy_set_header        X-Original-URL $scheme://$http_host$request_uri;
    add_header              Set-Cookie $auth_cookie;
    auth_request_set        $auth_cookie $upstream_http_set_cookie;
    proxy_pass_request_body off;
    proxy_set_header        Content-Length "";
}

# Special location for when the /auth endpoint returns a 401,
# redirect to the /start URL which initiates SSO
location @goauthentik_proxy_signin {
    internal;
    add_header Set-Cookie $auth_cookie;
    return 302 /outpost.goauthentik.io/start?rd=$request_uri;
}