Hi,
I'm running a reverse proxy with nginx and using certbot for ssl. It's been working great but recently with an php server installation it's been giving me problems.
I get access to the index but any other page I get a 404 error from nginx.

404 Not Found
nginx/1.14.0 (Ubuntu)

This is my conf file
server {

root /var/www/YOUR_DIRECTORY;
index index.php index.html index.htm;

###################################################
# Change "yoururl.com" to your host name

server_name my-domain;

# location / {
# try_files $uri $uri/ /index.php?q=$uri&$args;
# }

location /site/ {
if (!-e $request_filename){
rewrite ^/site/(.*)$ /site/index.php break;
}
}location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param PATH_TO_FRAMEWORKS /var/www/frameworks/;
fastcgi_param CORE_TYPE frameworks;
fastcgi_param IS_DEV true;
include fastcgi_params;
}

location = /favicon.ico {
log_not_found off;
access_log off;
}

location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}

location ~ /\. {
deny all;
}

location ~* /(?:uploads|files)/.*\.php$ {
deny all;
}location / {
proxy_pass http://my-server-ip/;
}





listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/my-domain/fullchain.pem; #$
ssl_certificate_key /etc/letsencrypt/live/my-domain/privkey.pem;$
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
if ($host = my-domain) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;

server_name my-domain;
return 404; # managed by Certbot


}


Any had similar problems? It's nginx having a different configuration for php?
Just in case I have tried commenting the last lines which appears to send the 404, but it did the same thing.