validationResult function don't give any Error about express-validator HOT 3 CLOSED

module.exports = {
 validate: async (req, res, next) => {
    await body('email')
      .normalizeEmail({
        all_lowercase: true,
      })
      .trim()
      .run(req);

  // ...other validators...

  if (!err.isEmpty()) {
      let messages = err.array().map((e) => e.msg);
      console.log(messages);
      req.skip = true;
      req.flash('error', messages.join(' and '));
      res.locals.redirect = '/users/new';
      next();
    } else {
      next();
    }
}