Javascript 将Node.js连接到docker中的Redis错误：客户端已关闭

docker-compose.yml大概是这样的:

version : "3"
services:
  irbredis:
    image: redis:7.2.2-alpine
    container_name: irbredis
  irbserver:
    image: node:20.9.0-alpine
    container_name: irbserver
    depends_on:
      - irbredis

在node.js容器中的某个位置，我得到了以下内容:

const redis = require('redis');
const rclient = redis.createClient({ url: "redis://irbredis:6379" });

Redis服务器肯定在运行，我可以从docker-compose中expose 端口，并go URL判断日志(log).但是从node.js代码中，我得到了错误日志(log):

irbserver  | Error: The client is closed
irbserver  |     at Commander._RedisClient_sendCommand (/app/node_modules/@redis/client/dist/lib/client/index.js:494:31)
irbserver  |     at Commander.commandsExecutor (/app/node_modules/@redis/client/dist/lib/client/index.js:189:154)
irbserver  |     at BaseClass.<computed> [as get] (/app/node_modules/@redis/client/dist/lib/commander.js:8:29)
irbserver  |     at Object.get (/app/node_modules/connect-redis/dist/cjs/index.js:20:34)
irbserver  |     at RedisStore.get (/app/node_modules/connect-redis/dist/cjs/index.js:53:42)
irbserver  |     at session (/app/node_modules/express-session/index.js:485:11)
irbserver  |     at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
irbserver  |     at trim_prefix (/app/node_modules/express/lib/router/index.js:328:13)
irbserver  |     at /app/node_modules/express/lib/router/index.js:286:9
irbserver  |     at Function.process_params (/app/node_modules/express/lib/router/index.js:346:12)

我做错了什么？

更多上下文/node.js代码:

redisFunc.js个

const redis = require('redis');
const rclient = redis.createClient({ url: "redis://irbredis:6379" });

module.exports =
{
    rclient : rclient
}

它被用在 sessionMW.js:

const session    = require('express-session');
const RedisStore = require('connect-redis').default;

module.exports =
session
(
    {
        store: new RedisStore({ client : require('./redisFunc.js').rclient }),
        //...
    }
);

它在index.js中使用

const express = require('express');
const app     = express();   

app.use(express.urlencoded({ extended: true }));
app.use(express.json());

app.use(require('./sessionMW.js'));
//...

版本:

"connect-redis": "^7.1.0",
"express": "^4.18.2",
"express-session": "^1.17.3",
"redis": "^4.6.10",