Connecting google authentication provider returns Bad Request

[Deniom3]

Describe the bug I am connecting the Google authorization source in accordance with the documentation. When I click save, an error occurs Bad Request. Authentik is published on the Internet via cloudflare tunnel. Another installation with a white IP connects without problems.

To Reproduce Authentik is enabled for proxy traefik with the following configuration

http:
  routers:
    authentik:
      rule: "Host(`authentik.domain.com.ru`)"
      entrypoints:
        - http   
      middlewares:
        - authentik-https-redirect
      service: authentik
          
    authentik-secure:
      rule: "Host(`authentik.domain.com.ru`)"
      entrypoints:
        - https
      tls: true
      service: authentik

  middlewares:
    authentik-https-redirect:
      redirectScheme:
        scheme: https

  services:
    authentik:
      loadBalancer:
        servers:
          - url: "http://192.168.2.31:9000"

Cloudflare tunnel has the following settings: Access for entry through the tunnel is available, no problems in operation or authorization are observed.

I am setting up the connection of the Google authorization provider according to the documentation https://docs.goauthentik.io/docs/sources/google/

When completing the setup after step 30, I get an error as shown in the screenshot below.

Expected behavior Adding Google authentication provider

Screenshots

Logs When you click finish configuring the log

{"auth_via": "session", "domain_url": "authentik.domein.com.ru", "event": "/api/v3/sources/oauth/", "host": "authentik.domein.com.ru", "level": "info", "logger": "authentik.asgi", "method": "POST", "pid": 128, "remote": "192.168.4.1", "request_id": "2afbd26299ac40729ffb49345568c4e6", "runtime": 425, "schema_name": "public", "scheme": "https", "status": 400, "timestamp": "2024-09-05T18:33:49.542527", "user": "UserAdmin", "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36"}
{"auth_via": "session", "domain_url": "authentik.domein.com.ru", "event": "/api/v3/sources/oauth/", "host": "authentik.domein.com.ru", "level": "info", "logger": "authentik.asgi", "method": "POST", "pid": 128, "remote": "192.168.4.1", "request_id": "ef92dac0f6e64dfb925a2b5217f1be4a", "runtime": 430, "schema_name": "public", "scheme": "https", "status": 400, "timestamp": "2024-09-05T18:33:50.414030", "user": "UserAdmin", "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36"}
{"auth_via": "session", "domain_url": "authentik.domein.com.ru", "event": "/api/v3/sources/oauth/", "host": "authentik.domein.com.ru", "level": "info", "logger": "authentik.asgi", "method": "POST", "pid": 128, "remote": "192.168.4.1", "request_id": "ad2d92357ddc4cf3a507c18cdecd79f0", "runtime": 426, "schema_name": "public", "scheme": "https", "status": 400, "timestamp": "2024-09-05T18:33:50.848252", "user": "UserAdmin", "user_agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36"}

Version and Deployment (please complete the following information):

• authentik version: 2024.8.0 (and 2024.6.0)
• Deployment: docker-compose

Additional context For each installation, a separate Google project was created on one account. The settings are identical except for the domain. The difference in the two installations is only in the method of publishing on the Internet.