Hello,

I am desperately trying to install CryptPad on my Docker server, where I use Nginx Proxy Manager as a reverse proxy.
I can access the CryptPad interface, but I am stuck on the message "Processing your credentials, this may take a few moments."
Here is my proxy configuration.

{
  "id": 8,
  "created_on": "2025-04-06 13:38:48",
  "modified_on": "2025-04-06 15:22:24",
  "owner_user_id": 1,
  "domain_names": [
    "cryptpad.mondomaine.xxx"
  ],
  "forward_host": "192.168.1.251",
  "forward_port": 3011,
  "access_list_id": 0,
  "certificate_id": "3",
  "ssl_forced": false,
  "caching_enabled": true,
  "block_exploits": true,
  "advanced_config": "",
  "meta": {
    "letsencrypt_agree": false,
    "dns_challenge": false
  },
  "allow_websocket_upgrade": true,
  "http2_support": false,
  "forward_scheme": "http",
  "enabled": true,
  "locations": [
    {
      "path": "/cryptpad_websocket",
      "advanced_config": "",
      "forward_scheme": "http",
      "forward_host": "192.168.1.251",
      "forward_port": 3013
    }
  ],
  "hsts_enabled": false,
  "hsts_subdomains": false
}

My docker-compose file :

services:
  cryptpad:
    image: "cryptpad/cryptpad:version-2025.3.0"
    hostname: cryptpad

    environment:
      - CPAD_MAIN_DOMAIN=https://cryptpad.mondomaine.xxx
      - CPAD_SANDBOX_DOMAIN=https://sandbox.mondomaine.xxx
      - CPAD_CONF=/cryptpad/config/config.js
      - CPAD_INSTALL_ONLYOFFICE=yes

    volumes:
      - /docker/cryptpad/blob:/cryptpad/blob
      - /docker/cryptpad/block:/cryptpad/block
      - /docker/cryptpad/customize:/cryptpad/customize
      - /docker/cryptpad/data:/cryptpad/data
      - /docker/cryptpad/files:/cryptpad/datastore
      - /docker/cryptpad/onlyoffice-dist:/cryptpad/www/common/onlyoffice/dist
      - /docker/cryptpad/onlyoffice-conf:/cryptpad/onlyoffice-conf
      - /docker/cryptpad/config/config.js:/cryptpad/config/config.js

    ports:
      - "3011:3000"
      - "3013:3003"

    ulimits:
      nofile:
        soft: 1000000
        hard: 1000000

And my config.js

module.exports = {


        httpUnsafeOrigin: 'https://cryptpad.mondomaine.xxx',
        httpSafeOrigin: "https://sandbox.mondomaine.xxx",
        httpAddress: '0.0.0.0',
...

In the checkup, I see that there is an error with the websocket, but I don't think I made a mistake...

Can you help me, as I would really like to use this suite?