I'm trying to anchor link from my HTML page to PHP. But when I click on whatever the links download window of the page will appear. If I leave the link as an HTML file, the link to another page works properly, but with PHP it starts to download.
<ul class="netflix-list">
<li><a href="index-en.php">Home</a></li>
<li><a href="index-en.php#about">About</a></li>
<li><a href="index-en.php#services">Services</a></li>
<li>
<ul>
<li><a href="tattoo-en.html">Tattoo</a></li>
<li><a href="beauty-en.html" class="gold">Beauty</a></li>
<li><a href="piercing-en.html">Piercing</a></li>
</ul>
</li>
<li><a href="index-en.php#contact">Contact</a></li>
<li>
<a href="beauty.html">Danish</a><img src="/images//denmark.svg" alt="danish-flag" class="flag" />
</li>