JavaScript failure - my little forum

Thanks, I found the problem.
I put some HTML on top of the index.php

<?php
/**
* my little forum - a simple PHP and MySQL based internet forum that displays
* the messages in classical threaded view
*
* @author Mark Alexander Hoschek < alex at mylittleforum dot net >
* @author Michael LÃ¶sler (https://github.com/loesler)
* @author Heiko August (https://github.com/auge8472)
* @copyright 2006-2018 Mark Alexander Hoschek
* @version 2.4.24 (2020-10-12)
* @link https://mylittleforum.net/

When I do the smiles wont click and I can't delete anything.
Is there a way to put html at the top and still have the forum work right?