在“上游”中找不到主机；php fpm“；在/etc/nginx/conf.d/default.conf中

我在尝试运行docker compose时遇到以下错误：

错误：在/etc/nginx/conf.d/default.conf中的上游“php fpm”中找不到主机

下面是我在docker-compose.yml中使用的代码

docker composer版本：“3.7”

services:
  ngnix:
    build:
      args:
        VERSION: $NGINX_VERSION
      context: .
      dockerfile: ./docker/nginx/Dockerfile
      target: dev
    volumes:
      - .:/app
    depends_on:
      - php-fpm
    links:
      - php-fpm
    ports:
      - 81:80
    networks:
      - inluccnetwork
  php-fpm:
    build:
      args:
        VERSION: $PHP_VERSION
      context: .
      dockerfile: ./docker/php-fpm/Dockerfile
      target: dev
    volumes:
      - .:/app
    networks :
      - inluccnetwork
    command: sh -c 'composer install --no-interaction --optimize-autoloader && php-fpm'
networks:
  inluccnetwork :
    driver: bridge

位于/etc/Nginx/conf.d/default.conf的Nginx配置文件代码：

server {
  listen 80;
  root /app/web;
  include mime.types;

  index app_dev.php index.html index.htm;

  location / {
      try_files $uri @rewriteapp;

  }

  location @rewriteapp {
      rewrite ^(.*)$ /app_dev.php/$1 last;
  }

  # DEV
  # This rule should only be placed on your development environment
  # In production, don't include this and don't deploy app_dev.php or config.php
  location ~ ^/(app_dev|config)\.php(/|$) {
      fastcgi_pass php-fpm:9000;
      fastcgi_split_path_info ^(.+\.php)(/.*)$;
      include fastcgi_params;
      fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
      fastcgi_param DOCUMENT_ROOT $document_root;
      internal;
  }

  # PROD
  location ~ ^/app\.php(/|$) {
      fastcgi_pass php-fpm:9000;
      fastcgi_split_path_info ^(.+\.php)(/.*)$;
      include fastcgi_params;
      fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
      fastcgi_param DOCUMENT_ROOT $document_root;
      internal;
  }
  # return 404 for all other php files not matching the front controller
  # this prevents access to other php files you don't want to be accessible.
  location ~ \.php$ {
      return 404;
  }
  location /test {
      return 200 '<h1>ok</h1>';
  }
  error_log syslog;
  access_log syslog;


  location ~ /\.ht {
      deny all;
  }

  location ~* \.(?:jpg|jpeg|gif|png|ico|cur|gz|svg|mp4|ogg|ogv|webm|htc)$ {
      access_log off;
      root /app/web;
      add_header Cache-Control "max-age=2592000";
      expires max;
      log_not_found off;
  }

  # CSS and Javascript
  location ~* \.(?:css|js)$ {
      add_header Cache-Control "max-age=31536000";
      access_log off;
      expires max;
      log_not_found off;
  }
}

我在default.php文件中不知道php fpm有错误，并且我在docker compose中添加了选项链接，但也有错误

您要传递到php fpm:9000您可能要传递到127.0.0.1:9000

ARG VERSION

# Dev image
FROM nginx:1.15-alpine as dev

# Copy nginx config
COPY ./docker/nginx/default.conf /etc/nginx/conf.d/default.conf

# Prod image
FROM dev as prod

# Copy assets
COPY ./assets /app/web