ESLintError cli is available, try reinstalling the extension

[donnak42030043]

I am trying to start javascript on Dreamweaver but when I execute the first var code, it says 

       var headingTop = document.querySelector("h1");
       console.log(headingTop);

ESLintError cli is available, try reinstalling the extension

I have exist it out and opened it again, it didn't work. How can I fix this problem?

[Nancy OShea]

Is linting enabled?

Go to Site > Manage Sites.  Edit your site definition. Click on Advanced Settings > JS Lint.  See screenshot.