Nginx - 无法访问没有.php的文件

Question

I don't know why my pages are not eachable without .php extension. Something is wrong ? However it work on another of my website

When I put try_files $uri $uri/ $uri.html $uri.php?$query_string; it's ok for the .php files without extension, but my website create "fakes folders/pages" like mywebsite.lol/category/example - and now it's doesn't reachable (404)

Here is my server{} block configuration.

# Gestion www
server {
    # Port
    listen 80;
    # Hostname
    server_name test.mywebsite.lol;
    # Logs
    access_log /var/log/nginx/test.mywebsite.lol.access.log;
    error_log /var/log/nginx/test.mywebsite.lol.error.log;
    root /home/mywebsite/www/test;
    # Fichier a executer par defaut (en ordre)
    index index.html index.php;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    # pass the PHP scripts to FastCGI server listening on the php-fpm socket
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }

    location ~ /\. {
        deny all;
    }
}