React lets you build user interfaces out of individual pieces called components. Create your own React components like Thumbnail, LikeButton, and Video. Then combine them into entire screens, pages, and apps.
How to reproduce it
<div className="main-page">
<MainHeader>
...
</div>Errors
JSX element has no corresponding closing tag
Error
Unexpected token. Did you mean `{'}'}` or `}`?Solution #1
Close all elements.
<div className="main-page">
<MainHeader/>
...
</div>Solution #2
Close all elements.
<div className="main-page">
<MainHeader></MainHeader>
...
</div>
