Javascript – Running the node-express app live in render.com with query throws internal server error

I’m trying to run a route live with query using nodejs express app in render.com. All other routes related to the crud operations are getting executed except the search filter route url with the query. I’m getting the below error while running it in render.com

I’m passing this parameter correctly in my live url => https://stackoverflow-demo-nodejs-express-s.onrender.com/sd-db-1021/collections/products/?quer=hi, but its throwing the internal server error. If you check the https://stackoverflow-demo-nodejs-express-s.onrender.com/sd-db-1021/collections/products/, it would give the response for the same router.get method implemented in the storage.js file.

Moreover, the operation is getting executed with localhost. Below is the reference:

I’m unable to debug this issue. Any help regarding the issue would be appreciated.

Here’s my piece of code:

/* app.js */
const express = require('express');
const bodyParser = require('body-parser');

// create express app
const app = express();
const port = process.env.PORT || 3000;
const cors = require('cors');

// set middleware
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cors());
app.use((req, res, next) => {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
    next();
});

// import routes
const routes = require('./routes/Routes');
app.use('/', routes);

//start server
app.listen(port, () => {
    console.log(`Server is up on port: ${port}`);
});


/* storage.js */
storageRoutes.get(storageUrl, (req, res) => {
    const { type } = req.params;
    const { quer } = req.query;
    // get existing data collection// fetch the collection from the storage related to the products
    let existingDataCollection = getData(storagePath);
    // get the existing data-set fot the specific type
    let existingCollectionTypeData = [...existingDataCollection[type]];

    // search filter implementation based on query
    if (quer) {
        // filter query
        const query = quer.toLowerCase().replaceAll(" ", "");
        // get the data-object related to the specified type
        existingCollectionTypeData = existingCollectionTypeData.filter((element) =>
            element.name.replaceAll(" ", "").toLowerCase().includes(query)
        );
    }

    // send the response with the collection of specified types
    res.send(existingCollectionTypeData);
});