docker，nginx，php使用curl报错？

Question

nginx错误日志

2020/02/12 08:44:29 [error] 7#7: *3 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 192.168.48.1, server: local.psychology.com, request: "POST /api/notify/send/ZXCS158138970909500070 HTTP/1.1", upstream: "fastcgi://192.168.48.4:9000", host: "local.psychology.com"
192.168.48.1 - - [12/Feb/2020:08:44:29 +0000] "POST /api/notify/send/ZXCS158138970909500070 HTTP/1.1" 502 494 "-" "PostmanRuntime/7.21.0"
192.168.48.1 - - [12/Feb/2020:08:46:53 +0000] "POST /api/notify/send/ZXCS158138970909500070 HTTP/1.1" 200 29 "-" "PostmanRuntime/7.21.0"

post提交第三方出现

我的docker-compose 配置

version: '2.2'
services:
    nginx:
        container_name: nginx
        image: nginx:1.17.6-alpine
        restart: always
        ports:
            - 80:80
            - 443:443
        volumes: #Overwrite nginx configuration
        # 挂载配置文件
            - ./nginx/sites/:/etc/nginx/conf.d/:ro 
            # 这里设置 宿主项目目录
            - ${PROJECTPATH}:/var/www:rw
            # 本地log目录映射
            - ./nginx/log:/var/log/nginx
        networks:
            - app_net    
    php:
        container_name: php
        build: 
            context: ./php/php${PHP_VERSION}
            args:
                PHP_VERSION: ${PHP_VERSION}
                SWOOLE_VERSION: ${SWOOLE_VERSION}
                REDIS_VERSION: ${REDIS_VERSION}
        expose:
            - "9000"
        ports: 
            - 9000:9000
            - 9501:9501
            - 9527:9527
        volumes:
            - ${PROJECTPATH}:/var/www:rw
            - ./php/${PHP_VERSION}/logs:/usr/local/php/log
            # 宿主主机的git密钥目录映射至容器内以便composer操作
            - /Users/kalvin/.ssh/:/root/.ssh/
        tty: true
        working_dir: /var/www
        networks:
            - app_net  
    redis:
        container_name: redis
        image: redis:latest
        ports: 
            - 6379:6379
        networks:
            - app_net  
networks: 
    app_net:
        driver: bridge    

在php代码前打断点有输出