I’ve following project containerized, Unfortunately when I added mongo root user it started refusing to connect. Following is docker-compose.yml

services:
  api:
    container_name: api_5_c1
    build: ./backend
    ports:
      - "8080:8080"
    develop:
      watch:
        - action: sync
          path: ./backend
          target: /app
          ignore:
            - node_modules
        - action: rebuild
          path: ./backend/package.json
    networks:
      - default
    depends_on:
      db:
        condition: service_started
  db:
    image: mongo:7.0.11
    restart: always
    container_name: mongodb_c1
    ports:
      - "27017:27017"
    networks:
      - default
    volumes:
      - db_data:/data/db
    environment:
      MONGO_INITDB_ROOT_USERNAME: root
      MONGO_INITDB_ROOT_PASSWORD: 1234
networks:
  default:
    name: net_5
volumes:
  db_data:
    driver: local

This is my connection string
mongodb://root:1234@mongodb_c1:27017/course-goals?authSource=admin
Whats wrong in here?