Question on a lesson

Hello. Was wondering what I did wrong in my code. it says that i need to add a tr element but i did. Please help!:woman_technologist:t5:

          <table>
            <caption>Net Worth</caption>
            <thead>
              <tr>
              <td></td>
              <th><span class="sr-only">2019</span></th>
              <th><span class="sr-only">2020</span></th>
              <th><span class="sr-only">2021</span></th>
              </tr>
            </thead>
            <tbody>
              <tr class="total"><th>Total<span class="sr-only"> Net Worth</span></th></tr>
              <td>$-171</td>
               <td>$136</td>
                <td class="current">$334</td>
            </tbody>
          </table>

Hi, please provide the link to the challenge.