Learn HTML by Building a Cat Photo App - Step 20

Tell us what’s happening:
The page is saying: " * After the h3 element with the Things cats love: text, add an unordered list (ul) element. Note that nothing will be displayed at this point.*
Here’ the Code:

<html>
  <body>
    <main>
      <h1>CatPhotoApp</h1>
      <section>
        <h2>Cat Photos</h2>
        <!-- TODO: Add link to cat photos -->
        <p>See more <a target="_blank" href="https://freecatphotoapp.com">cat photos</a> in our gallery.</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>

<!-- User Editable Region -->

        <h2>Cat Lists</h2>
            <h3>Things cats love:</h3>
                <ul>
                </u>        

<!-- User Editable Region -->

      </section>
    </main>
  </body>
</html>

I’ve done this coding but it gives the error:
*

Test

        Sorry, your code does not pass. Try again.

Hint

         Your `ul` element should have a closing tag. Closing tags have a `/` just after the `<` character.* Now please tell me what should I do? Kindly help me fix this! I'll be very thankful to you for this act of kindness.

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Challenge: Learn HTML by Building a Cat Photo App - Step 20

Link to the challenge:

I think you can see the typo here?