Multisite main page does not open (but sub-directories do)

Hello, I am having a problem with my multipage settings of wordpress. I have a main homepage https://www.lojinstitute.com (in Portuguese) and I am working on the translation of the homepage to English, and the page in English will be https://www.lojinstitute.com/en/ The problem is that when I type https://www.lojinstitute.com/en/ I get this:

Index of /en

Parent Directory
cgi-bin/
Apache Server at https://www.lojinstitute.com Port 80

One confusing point is that I changed both .htaccess in the main root whose code is as follows

# Use PHP54 as # uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]
#END WordPress

And the .htaccess in the public.html folder as follows:

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

The changes applied to wp-config.php are

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', false);
define('DOMAIN_CURRENT_SITE', 'www.lojinstitute.com');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);

The site is active and we can see that also by noticing that trying to reach an internal page of https://www.lojinstitute.com/en/home the page shows up.

Thank you so much for your help!