Index.php is added as a sufixe in my Drupal site

Hello,

I suppose it’s a apache problem with my HestiaCP configuration.

Sometimes, my sitemap.xml for my Drupal installation present a sufixe on the URL as index.php instead to serve the only slug I’m waiting.

I have notice that I can rebuild my sitemap, but it’s not a good solution.

How can I solve that, please?

Regards