Error occured during reporter init Error (trying to attach socket.io)

Hi Every one! How I'll solve this:

info: fs store is initialized successfully
2020-08-12T16:36:02.113Z - debug: studio default theme is: light
2020-08-12T16:36:02.125Z - info: Configuring routes for existing express app.
2020-08-12T16:36:02.154Z - info: Using existing server instance.
2020-08-12T16:36:02.159Z - info: fs store emits sockets to synchronize underlying changes with studio
2020-08-12T16:36:02.167Z - error: Error occured during reporter init Error: You are trying to attach socket.io to an express request handler function. Please pass a http.Server instance.
    at Server.listen.Server.attach (C:\_test\node_modules\socket.io\lib\index.js:258:11)

main.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
import * as compression from 'compression';
import configService from './application/config/configuration.service';
import { WebModule } from './web/web.module';
import { CommonsModule } from '@domain/commons/commons.module';
import { Dynamic } from '@domain/dynamic/dynamic.entity';
import { SecurityModule } from '@domain/security/security.module';
import { json, urlencoded } from 'express';
import * as  express from 'express';

async function appNest() {
  const app = await NestFactory.create(AppModule, {
  })
  app.enableCors()
  app.use(compression())
  const options = new DocumentBuilder()
    .setTitle(`Nautilus Backend API`)
    .setDescription(`ERP`)
    .setVersion(`0.0.1`)
    .addBearerAuth()
    .build()
  return app
}

async function bootstrap() {
  const mainApp = express()

  async function mountSubApp(app, mountPath, subAppBoot) {
    const subApp = await subAppBoot()
    await subApp.init()
    app.use(mountPath, subApp.getHttpAdapter().getInstance())
    return app
  }

  const reportingApp = express();
  mainApp.use('/v1/reports', reportingApp);

  mountSubApp(mainApp, '', appNest)
    .then(app => app.listen(configService.httpServerPort))

  const jsreport = require('jsreport')({
    extensions: {
      express: { app: reportingApp, server: mainApp },
    },
  });

  jsreport.init().then(() => {
    console.log('jsreport server started')
  }).catch((e) => {
    console.error(e);
  });
}
bootstrap();

jsreport.config.json

{
  "appPath": "/v1/reports",
  "store": {
    "provider": "fs"
  },
  "extensions": {
    "fs-store-aws-s3-persistence": {
      "accessKeyId": "xxx",
      "secretAccessKey": "xxx",
      "bucket": "bucket",
      "lock": {
        "queueName": "jsreport-lock.fifo"
      },
      "region": "us-east-1",
      "enabled": true,
      "attributes": {},
      "s3Options": {
        "maxRetries": 10
      }
    },
    "fs-store": {
      "persistence": {
        "provider": "aws-s3"
      },
      "compactionInterval": 60000
    },
    "studio": { "flushLogsInterval": 60000 },
    "scheduling": { "intreval": 60000 },
    "authentication": {
      "cookieSession": {
        "secret": "M5DnenXb~YpuUrUY"
      },
      "admin": {
        "username": "admin",
        "password": "123456"
      },
      "enabled": true
    },
    "sample-template": {
      "createSamples": false
    },
    "scripts": {
      "allowedModules": ["https"],
      "strategy": "http-server"
    }
  }
}

jan_blaha

Please see here
https://jsreport.net/learn/adapting-jsreport#attach-to-existing-express-app

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

app.get('/', (req, res) => {
  res.send('Hello from the main application');
});

const reportingApp = express();
app.use('/reporting', reportingApp);

const server = app.listen(3000);

const jsreport = require('jsreport')({
  extensions: {
      express: { app: reportingApp, server: server },
  },
  appPath: "/reporting"
});

jsreport.init().then(() => {
  console.log('jsreport server started')
}).catch((e) => {
  console.error(e);
});

The server prop from express: { app: reportingApp, server: mainApp } should be taken from the result of mainApp.listen()

Thank you so much for helping very quickly, Jan Blaha.