Fresh install Laravel 5.1 and get server 500

i install Laravel 5.1 via composer set premissions for /storage and /bootstrap/cache and create vhost in sites-enable/project.conf:

<VirtualHost *:80>
    # The ServerName directive sets the request scheme, hostname and port that
    # the server uses to identify itself. This is used when creating
    # redirection URLs. In the context of virtual hosts, the ServerName
    # specifies what hostname must appear in the request's Host: header to
    # match this virtual host. For the default virtual host (this file) this
    # value is not decisive as it is used as a last resort host regardless.
    # However, you must set it for any further virtual host explicitly.
    ServerName www.sklad.dev

    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/html/sklad/public

    <Directory /var/www/html/sklad/public>
        AllowOverride All
        Order allow,deny
        Allow from all
        # New directive needed in Apache 2.4.3: 
        Require all granted
    </Directory>


    # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
    # error, crit, alert, emerg.
    # It is also possible to configure the loglevel for particular
    # modules, e.g.
    #LogLevel info ssl:warn

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    # For most configuration files from conf-available/, which are
    # enabled or disabled at a global level, it is possible to
    # include a line for only one particular virtual host. For example the
    # following line enables the CGI configuration for this host only
    # after it has been globally disabled with "a2disconf".
    #Include conf-available/serve-cgi-bin.conf
</VirtualHost>


# vim: syntax=apache ts=4 sw=4 sts=4 sr noet

in /public/.htaccess i have :

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews
    </IfModule>

    RewriteEngine On

    # Redirect Trailing Slashes...
    RewriteRule ^(.*)/$ /$1 [L,R=301]

    # Handle Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]
</IfModule>

i enabled revrite mod on apache2 and restart apache.But i still have Server not found 500. Do you have some ides what can be wrong?Thanks

via Chebli Mohamed