Fix that error

Question

On 37 line
https://code.sololearn.com/WVb29uPxIGtM/?ref=app

Answer 1

Change
startGame() ;
To
onload = startGame;

Answer 2

Put
const cells = document.querySelectorAll('.cell');
Inside startGame function

Answer 3

Copy this script on your PC. And try debugging it using Browser's Console. You can do it by doing "mouse second click" and "inspect element"

Answer 4

But after adding that ,it shows nothing, see my code