Odoo not working - no CSS on login page and blank screen post-login

Question

I cloned a project from GitLab that uses Docker to set up multiple services, including Odoo 16, PostgreSQL, a FastAPI backend, and a Next.js frontend.

The project works perfectly on my colleague's machine, but on my setup (macOS), and on another colleague's machine, we are facing the same issue:

The containers start successfully, and I can configure the database connection without any issues. However, when I try to access Odoo at http://localhost:8069/, I encounter the following problem:

• The login page loads without CSS.
• After entering valid credentials, I'am redirected to http://localhost:8069/web, but the page is completely blank.

What I Tried:

I attempted several fixes, but none resolved the issue:

1- Regenerating Odoo assets:

docker exec -it odoo bash
odoo --update=all --stop-after-init
docker-compose restart odoo

2- Checking permissions for mounted volumes:

sudo chmod -R 777 odoo_data
sudo chmod -R 777 odoo_source
sudo chmod -R 777 odoo_custom_addons

3- Clearing browser cache and trying in incognito mode. 4- Verifying Docker logs for errors (nothing unusual found).

docker-compose.yml (Relevant parts):

services:
  postgres_db:
    image: postgres:15
    container_name: postgres_db
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: password
      POSTGRES_DB: xiptelecom
    volumes:
      - postgres_data:/var/lib/postgresql/data
      - ./init_postgres_odoo.sql:/docker-entrypoint-initdb.d/init_postgres_odoo.sql
    ports:
      - "5432:5432"

  pgadmin:
    image: dpage/pgadmin4
    container_name: pgadmin4_container
    restart: always
    ports:
      - "5050:80"
    environment:
      PGADMIN_DEFAULT_EMAIL: admin@admin.com
      PGADMIN_DEFAULT_PASSWORD: admin
    volumes:
      - pgadmin_data:/var/lib/pgadmin

  backend:
    build:
      context: ./Backend
    container_name: backend
    command: uvicorn main:app --host 0.0.0.0 --port 8080 --reload
    volumes:
      - ./Backend:/app
    ports:
      - "8080:8080"
    depends_on:
      - postgres_db

  frontend:
    build:
      context: ./Frontend
    container_name: frontend
    command: "npm run dev"
    volumes:
      - ./Frontend:/app
    ports:
      - "3000:3000"
    depends_on:
      - backend

  odoo:
    image: odoo:16
    container_name: odoo
    depends_on:
      - postgres_db
    ports:
      - "8069:8069"
    environment:
      HOST: postgres_db
      USER: odoo_user # utilisateur postgres sql
      PASSWORD: odoo_password # mot de passe postgres sql
      DATABASE: odoo # nom de la bdd pour Odoo
      MASTER_PASSWORD: admin
    volumes:
      - odoo_data:/var/lib/odoo
      - ./odoo_source:/mnt/odoo_source # monte le dossier local
      - ./odoo.conf:/etc/odoo/odoo.conf # Ajout de la configuration locale
      - ./odoo_custom_addons:/mnt/extra-addons # répertoire local pour les modules Odoo personnalisés


volumes:
  postgres_data:
  pgadmin_data:
  odoo_data:

odoo.conf:

[options]
; Infos de connexion à la bdd
db_host = postgres_db
db_port = 5432
db_user = odoo_user
db_password = odoo_password
db_name = odoo

; Configuration des modules
addons_path = /mnt/odoo_source/addons,/mnt/extra-addons

; Autres paramètres
data_dir = /var/lib/odoo
admin_passwd = $pbkdf2-sha512$600000$DAEAQKjV2jsHYKwVIoQwpg$ScuSHwYyRuGfJqbi65UUajG/kN7E5DxptFq1S.hwATMA7o/Mfx7M2dftb4VLDYmR5T1SVgCRaAcd8iHZCJ2QKQ
xmlrpc_port = 8069
longpolling_port = 8072
logfile = /var/log/odoo/odoo.log

==> Logs & Errors:

No critical errors appear in the logs. The Odoo service starts without issues, and I can even configure the database.

Questions:

1. Why is the login page missing CSS?
2. Why do I get a blank page after login (http://localhost:8069/web)?
3. How can I debug and resolve this issue?

Any insights or troubleshooting steps would be greatly appreciated!