Problems using NC19 with cpanel

Greetings

I am using a server with cpanel and I installed Nextcloud via Web through Softaculous apps

OS Linux
Apache 2.4.43
PHP 7.2.31
MySQL Maria 10.3.23
NC ver 19.0.0

I am trying to using Onlyoffice with Document Server but I can’t access the files. Every time I open a Document it said “connection is lost” and it shows a blank file and I checked the logs and I have these problems

“You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead at mydomain/nextcloud/3rdparty/patchwork/utf8/src/Patchwork/Utf8/Bootup/intl.php#18” every seconds these messages appear

Error occurred while checking server setup
Error occurred while checking server setup
Error occurred while checking server setup

Your web server is not properly set up to resolve “/nextcloud/ocm-provider/”. This is most likely related to a web server configuration that was not updated to deliver this folder directly.

Your web server is not properly set up to resolve “/nextcloud/ocs-provider/”

Your web server is not properly set up to resolve “/.well-known/caldav”

Your web server is not properly set up to resolve “/.well-known/carddav”

I am new to this, so sorry for the maybe dumb questions