The problem I mentioned was very simple: installing what I needed, as indicated in the message. It was right in front of me, and I didn't see it.
But I'm unable to install PHP 8.4.15 on CWP 8. If it's not one error, it's another... Ideally, I'd have it in php-fpm, but in the meantime... This is becoming urgent, at least for me. A website requires PHP 8.4, and if I don't install it... it's a bad situation.