Tell us what’s happening:
Describe your issue in detail here.
**Your code so far**
<html>
<body>
<h1>CatPhotoApp</h1>
<main>
<section>
<h2>Cat Photos</h2>
<!-- TODO: Add link to cat photos -->
<p>Click here to view more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a>.</p>
<a href="https://freecatphotoapp.com"><img src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
</section>
<section>
<h2>Cat Lists</h2>
<h3>Things cats love:</h3>
<u1>
<li>cat nip</li>
<li> laser pointers</li>
<li> lasagna</li>
</u1>
What's wrong with the code? this is the only hint i get when i try to solve this: Your ul element should have an opening tag. Opening tags have this syntax: <elementName>.
</section>
</main>
</body>
</html>
**Your browser information:**
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36
Challenge: Learn HTML by Building a Cat Photo App - Step 20
Link to the challenge: