Docker compose issue with pgAdmin

I have this docker-compose file:

version: '1'

services:
  postgres:
    container_name: postgres_container
    image: 'postgres:latest'
    environment:
      POSTGRES_USER: ${POSTGRES_USERNAME}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DATABASE}
    ports:
      - 5432:5432
    networks:
      app_network:
        ipv4_address: 172.26.0.11
    restart: unless-stopped
    healthcheck:
      test: ['CMD', 'pg_isready -U postgres']
      interval: 5s
      timeout: 5s
      retries: 5
    volumes:
      - postgres:/data/postgres
  supertokens:
    container_name: supertoken_container
    image: registry.supertokens.io/supertokens/supertokens-postgresql
    depends_on:
      - postgres
    volumes:
      - supertoken:/data/supertoken
    ports:
      - 3567:3567
    environment:
      POSTGRESQL_CONNECTION_URI: 'postgresql://postgres:123@postgres:5432/netabe'

    networks:
      - app_network
    restart: unless-stopped
    healthcheck:
      test: >
        bash -c 'exec 3<>/dev/tcp/127.0.0.1/3567 && echo -e "GET /hello HTTP/1.1\r\nhost: 127.0.0.1:3567\r\nConnection: close\r\n\r\n" >&3 && cat <&3 | grep "Hello"'
      interval: 10s
      timeout: 5s
      retries: 5
  pgadmin:
    container_name: pgadmin_container
    image: dpage/pgadmin4
    depends_on:
      - postgres
    volumes:
      - pgadmin:/var/lib/pgadmin

    environment:
      PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:-'email'}
      PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-'password'}
      PGADMIN_CONFIG_SERVER_MODE: 'False'

    ports:
      - '${PGADMIN_PORT:-5050}:80'
    networks:
      - app_network
    restart: unless-stopped

networks:
  app_network:
    external: true
    driver: bridge
volumes:
  postgres:
  pgadmin:
  supertoken:
  redis:

but I am unable to connect to pgAdmin from the browser. I don’t understand the issue as if I send data from postman then it gets saved to pgAdmin app which is on my local machine.
But that table does not appear when I visit localhost:5050/browser/

The compose file looks right, but what data do you send from postman to pgadmin? Isnt pgadmin just a webadmin for postgres which saves only its settings? And how do you send the request from postman?