Configuration an existed file www.site1.com.conf

I am writting this message that I need you help about apache httpd.

Before all, I work on Linux RedHat Centos , I had :

• PHP 7.3
• APACHE httpd 2.4
• Symfony 4

I have many names domaines, www.site1.com, www.site2.com …etc and they all configurate very well and they works.

I have an existed project written by php in www.website1.com, I changed and transformed same project from php to symfony. So what I did ?

• I pute environement symfony prod and I did bin/console cache:clear =>it’s ok
• I modified file www.site1.com.conf (in directory sites-availabes), the only change is the path :

1. Before path was like: DocumentRoot /var/www/www.site1.com
2. Now : DocumentRoot /var/www/www.site1.com/public and I added also

 <Directory /var/www/www.site1.com/public>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride all
        Order allow,deny
        allow from all

        Require all granted

        <IfModule mod_rewrite.c>
            Options -MultiViews
            RewriteEngine On
            RewriteCond %{REQUEST_FILENAME} !-f
            RewriteRule ^(.*)$ index.php [QSA,L]
        </IfModule>
   </Directory>

Then I saved the file and restart server httpd

So I go to browser web to check the website www.site1.com and I get an empty page and answer is “ERR_EMPTY_RESPONSE” PLZ, Do you have any idea to resolve this problem ? Thank you for reading. Best regards