Fix Checkmarx XSS Vulnerabilities exprees js

I always see checkmarx XSS Vulnerabilities in exprees router, Not sure what to use other function to fix it.I used express validator but no luck so far.

  const express = require("express");

const router = express.Router();
const { body, validationResult } = require("express-validator");

router.post(
  `/testData`,
  body("empName").trim().escape().not().isEmpty(),
  async (req, res, next) => {
    try {
     //getting checkmarx xss reflected vulnerability at req.body
      const callTags = req.body
      const errors = validationResult(req);
      if (!errors.isEmpty()) {
        return res.status(400).json({ errors: errors.array() });
      }
      res.status(response.statusCode).json(''hello);
    } catch (ex) {
      
      next(ex);
    }
  }
);
module.exports = router;

}

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