Node.js app on Dedicated Server - Getting image from url - Hostname/IP does not match certificate's altnames

Question

I've rented a dedicated server, set up a website (somedomainblah.com), and on the subdomain (app.somedomainblah.com), I have a node.js app that requests an image from the website (my website is on that server).

So the dedicated server itself is at IP: 0.0.0.210 And my cPanel account which I created on the dedicated server is at 0.0.0.211 (where website is located)

I got the error:

RequestError: Error [ERR_TLS_CERT_ALTNAME_INVALID]: Hostname/IP does not match certificate's altnames: Host: myrootdomain.com. is not in the cert's altnames: DNS:0-0-0-210.cprapid.com, DNS:mail.0-0-0-210.cprapid.com, DNS:www.0-0-0-210.cprapid.com

I tried rejectUnauthozized false, and it give me error 404.

Here is the code of Node.js app:

const express = require('express');
const cors = require('cors');
const request = require('request');
const fs = require('fs');

const app = express();

app.use(cors());

const rp = require('request-promise');

app.get('/images/:imageId', async (req, res) => {
  // Set the necessary headers for CORS
  res.setHeader('Access-Control-Allow-Credentials', true);
  res.setHeader('Access-Control-Allow-Origin', '*');
  res.setHeader('Access-Control-Allow-Methods', 'GET,OPTIONS,PATCH,DELETE,POST,PUT');
  res.setHeader(
    'Access-Control-Allow-Headers',
    'X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Content-Type, Date, X-Api-Version'
  );

  // Get the image from another source
  const imageId = req.params.imageId;
  const imageUrl = 'https://somedomainblah.com/play/images/' + imageId +'.png';
  try {
    const image = await rp({
      method: 'GET',
      uri: imageUrl,
      encoding: null,
    });
    
    res.set('Content-Type', 'image/png');
    res.send(Buffer.from(image, 'binary'));
  } catch (error) {
    console.log(error);
    return res.status(500).send('Error retrieving image');
  }
});




app.listen(3000, () => {
        console.log('Server started on port 3000');
    });