I got an error saying "getaddrinfo EAI_AGAIN mysql"

[er-16]

Hi everyone,
I got an error saying "getaddrinfo EAI_AGAIN mysql" after running docker compose up. I don't know what I'm doing wrong. Is it supposed to use the "db" parameter instead of a custom one?
Here is my compose.yaml file:

services:
  nginx:
    image: jc21/nginx-proxy-manager:2.11.3
    hostname: nginx
    container_name: nginx
    depends_on:
      - mysql
    deploy:
      resources:
        limits:
          cpus: "1"
          memory: 2gb
        reservations:
          cpus: "0.5"
          memory: 1gb
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "/usr/bin/check-health"]
      interval: 10s
      timeout: 5s
      retries: 3
    environment:
      # PUID: 1000
      # PGID: 1000
      DB_MYSQL_HOST: mysql
      DB_MYSQL_PORT: 3306
      DB_MYSQL_USER: nginx
      DB_MYSQL_PASSWORD: nginx
      DB_MYSQL_NAME: nginx
      # DISABLE_IPV6: true
      # X_FRAME_OPTIONS: deny # sameorigin
    volumes:
      - ${PWD}/nginx/data/:/data/
      # - ${PWD}/nginx/custom:/data/nginx/custom/
      - ${PWD}/nginx/letsencrypt/:/etc/letsencrypt/
    networks:
      - proxy
    ports:
      - 80:80
      - 443:443
      - 81:81

  mysql:
    image: mysql:8.4.2
    hostname: mysql
    container_name: mysql
    deploy:
      resources:
        limits:
          cpus: "1"
          memory: 2gb
        reservations:
          cpus: "0.5"
          memory: 1gb
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "healthcheck.sh", "--connect", "--innodb_initialized"]
      start_period: 10s
      interval: 10s
      timeout: 5s
      retries: 3
    environment:
      MYSQL_ROOT_PASSWORD: mysql
      MYSQL_DATABSE: nginx
      MYSQL_USER: nginx
      MYSQL_PASSWORD: nginx
    volumes:
      - ${PWD}/mysql/:/var/lib/mysql/

networks:
  proxy:
    name: proxy
    driver: bridge