why am i receiving a check is not a function error when using express validator?

I am trying to validate user input with express-validator I am following this tutorial here: https://heynode.com/tutorial/how-validate-and-sanitize-expressjs-form/

However i'm receiving the error "TypeError: check is not a function" even though i have imported it at the top. Here is my code:

    const express = require('express');
    const web3 = new Web3(new Web3.providers.HttpProvider(serverUrl));
    const rateLimit = require("express-rate-limit");
    const { check, validationResult } = require('express-validator');
    
    const authenticateJWT = async (req, res, next) => {
      const authHeader = req.headers.authorization;
    
      if (authHeader) {
 code omitted
      } else {
        res.sendStatus(401);
      }
    };
    
    var loginValidate = [
      check('username', 'Username Must Be an Email Address').isEmail(),
      check('password').isLength({ min: 8 })
      .withMessage('Password Must Be at Least 8 Characters')
      .matches('[0-9]').withMessage('Password Must Contain a Number')
      .matches('[A-Z]').withMessage('Password Must Contain an Uppercase Letter')];
    
    
    router.post('/order/buy_order', authenticateJWT , loginValidate, async (req, res) => {
        try {
    code omitted  }
        } catch (error) {
            console.log(error, "makeBuyOrder error in routes");
            res.send(null).end();
        }
    });

How can i fix this?