当我尝试在flask应用中执行get或post时，出现以下错误。
mongo：27017：[Errno-2]名称无法解析（配置超时：socketTimeoutMS：20000.0ms，connectTimeoutMS：20000.0ms），时间：30 s，拓扑描述：<TopologyDescription id：657 c619 ae 1 e4696 f65 e708 c2，topology_type：Unknown，servers：[<ServerDescription（'mongo'，27017）server_type：Unknown，rtt：None，error= AutoReconstruction（'mongo：27017：[Errno -2] Name does not resolve（configured timeouts：socketTimeoutMS：20000.0ms，connectTimeoutMS：20000.0ms超时'）>]>
我的app.py

from flask import Flask, jsonify
from pymongo import MongoClient
from loguru import logger
from bson.json_util import dumps

app = Flask(__name__)

MONGO_URI = "mongodb://admin:admin@mongo:27017/"

@app.route('/', methods=['GET'])
def get_data():
    try:
        logger.info('Connecting to MongoDB')
        client = MongoClient(MONGO_URI)
        logger.info('Connected to MongoDB')
        db = client.test
        collection = db.test
        data = collection.find({})
        serialized_data = dumps(data)
        logger.info('Data retrieved successfully')
        return jsonify({"data": serialized_data}), 200
    except Exception as e:
        return jsonify({"error": f"{str(e)}"}), 500

@app.route('/', methods=['POST'])
def create_data():
    try:
        logger.info('Connecting to MongoDB')
        client = MongoClient(MONGO_URI)
        logger.info('Connected to MongoDB')
        db = client.test
        collection = db.test
        data = collection.insert_one({"name": "test"})
        logger.info('Data created successfully')
        return jsonify({"data": data}), 200
    except Exception as e:
        return jsonify({"error": f"{str(e)}"}), 500

if __name__ == '__main__':
    app.run(host='0.0.0.0')

字符串
docker-compose

version: '3.9'

services:
  web:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "5000:5000"
    depends_on:
      - mongodb
      - nginx

  nginx:
    image: nginx:latest
    ports:
      - "80:80"
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro

  mongodb:
    image: mongo:latest
    ports:
      - "27017:27017"
    environment:
      - MONGO_INITDB_DATABASE=test
      - MONGO_INITDB_ROOT_USERNAME=admin
      - MONGO_INITDB_ROOT_PASSWORD=admin
      - MONGO_URI=mongodb://admin:admin@mongodb:27017/test
    volumes:
      - mongodb_data:/data/db

volumes:
  mongodb_data:

型
说有一个连接错误的错误对我来说没有多大意义，因为正在生成的日志显示请求通过连接线。
有人知道怎么解决吗？