Container WordPress closes without error message (Docker, Bitnami, MySQL)

Docker Engine Compose
1

Hello together,
I have a problem creating containers. I want to use the console to create containers automatically. This works so far only it stops the container WordPress after a short time.

I guess the problem is related to MySQl because the automatic creation with MariaDB already worked. But with MySQL I can’t get it to work.

The Container WordPress closes without any error message. The only message I got in Synology is that it closes. ( It is shown in the picture)

Would be great if someone could help me.

Greetings

version: '3.7'
  services:
  db:
    image: bitnami/mysql:latest
    volumes:
      - ./db
    environment:
      - MYSQL_ROOT_PASSWORD=duerrundsteidle
      - MYSQL_DATABASE=duerrundsteidle
      - MYSQL_USER=duerrundsteidle
      - MYSQL_PASSWORD=duerrundsteidle
  wordpress:
    image: bitnami/wordpress:latest
    depends_on:
      - db
    ports:
      - 8000:80
      - 4000:443
    volumes:
      - ./wordpress
    environment:
      - WORDPRESS_DB_HOST=db:3306
      - WORDPRESS_DB_NAME=wpdb
      - WORDPRESS_DB_USER=user
      - WORDPRESS_DB_PASSWORD=passowrd
  phpmyadmin:
    image: bitnami/phpmyadmin:latest
    depends_on:
      - db
    ports:
      - 12000:80
      - 14000:443
    volumes:
      - ./phpmyadmin