Symfony: 404 error on production - symfony

Question

Here's an example of a page that works perfectly fine on the dev env and returns a 404 error on the prod env
Not Found
The requested URL /app/reporter/ was not found on this server.
Apache/2.4.7 (Ubuntu) Server at symfony.dev Port 80
don't let yourself confuse by the /app/ route, this in a real route and has nothing to do with app.php
running php app/console router:debug --env=prod does confirm there's no problem with router :
[router] Current routes
Name Method Scheme Host Path
reporter ANY ANY ANY /app/reporter/
Of course, before posting this message, I :
cleared the cache, with console cache:clear --env=prod, as well as directly deleting cache files but this didnt change anything.
double-checked mod_rewrite was on in phpinfo
Anyway, my guess is the error comes more from Apache so here's my conf:
<VirtualHost *:80>
ServerAdmin webmaster#localhost
ServerName symfony.dev
SetEnv SYMFONY__TENANT__ID "123"
DocumentRoot /var/www/html/Symfony/web
# <Directory />
# Options FollowSymLinks
# AllowOverride None
# </Directory>
<Directory /var/www/html/Symfony/web >
Options Indexes FollowSymLinks MultiViews
AllowOverride All
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-symfony.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access-symfony.log combined
Alias /doc/ "/usr/share/doc/"
<Directory "/usr/share/doc/">
Options Indexes MultiViews FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
Allow from 127.0.0.0/255.0.0.0 ::1/128
</Directory>
</VirtualHost>
in /var/www/html/, there's only a symlink:
lrwxrwxrwx 1 root root 29 mai 13 2014 Symfony -> /home/me/path/to/symfony
and i didnt change anything in the default symfony /web/.htaccess :
without comments for readability's sake
DirectoryIndex app.php
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
RewriteRule ^(.*) - [E=BASE:%1]
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteRule ^app\.php(/(.*)|$) %{ENV:BASE}/$2 [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule .? - [L]
RewriteRule .? %{ENV:BASE}/app.php [L]
</IfModule>
<IfModule !mod_rewrite.c>
<IfModule mod_alias.c>
RedirectMatch 302 ^/$ /app.php/
</IfModule>
</IfModule>

Answer 1

Apache error log confirmed the error came from there :
[negotiation:error] [pid 1583] [client 127.0.0.1:44590] AH00687: Negotiation: discovered file(s) matching request: /var/www/html/Symfony/web/app (None could be negotiated).
As my understanding of Apache is seriously limited, i google the error and found this topic :
http://www.bennadel.com/blog/2218-negotiation-discovered-file-s-matching-request-none-could-be-negotiated.htm
So i ended up simply removing the MultiViews option of my vhost conf and it solved it.
As the above give link is mentionning,
This goes to show you how bad it is to simply enable settings when you are not sure what they do.