Errore 500 apache2

dopo il solito avvio di apache2 con il codice

sudo service apache2 start

quando vado a digitare 127.0.0.1 sul browser la classica pagina di apache si avvia mentre quando provo ad aprire il mio file 127.0.0.1/progetto_torneo/prova.php che sta dentro la cartella /var/www/progetto_torneo mi appare scritto

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.

ho modificato il file /etc/apache2/conf.d/security così

Directory />
    Require all granted
    AllowOverride none
    # Order allow,deny
    # Deny from all
< /Directory >

Mentre il file /etc/apache2/sites-available/default così

<VirtualHost *:80>
    ServerAdmin webmaster@localhost

    DocumentRoot /var/www/progetto_torneo/
    < Directory />
        Options FollowSymLinks
        AllowOverride None
        Require all granted
    < /Directory>
    < Directory /var/www/progetto_torneo/>
        Require all granted
        Options Indexes FollowSymLinks MultiViews
        AllowOverride none
        # Order allow,deny
        # Allow from all
    < /Directory>

    ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
    < Directory "/usr/lib/cgi-bin">
        AllowOverride None
        Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
        Order allow,deny
        Allow from all
    < /Directory>

    ErrorLog ${APACHE_LOG_DIR}/error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn

    CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

considerando che sono un novelline di apache2 potreste darmi una mano? Vi ringrazio in anticipo