NGINX error: rewrite or internal redirection cycle while internally redirecting to "/index.php"

This is happening for the first time and never had this before, but on a forge server I'm getting the following error:

rewrite or internal redirection cycle while internally redirecting to "/index.php"

And the Nginx Config as used in your forge-example.

# FORGE CONFIG (DOT NOT REMOVE!)
include forge-conf/dedansacademie.be/before/*;

# Bots to ban via user agent
map $http_user_agent $limit_bots {
    default 0;
    ~*(AhrefsBot|Baiduspider|PaperLiBot) 1;
}

server {
    # Listen for both IPv4 & IPv6 requests on port 443 with http2 enabled
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    # General virtual host settings
    server_name dedansacademie.be;
    root /home/forge/dedansacademie.be/current/public;
    index index.html index.htm index.php;
    charset utf-8;

    # Ban certain bots from crawling the site
    if ($limit_bots = 1) {
        return 403;
    }

    # 404 error handler
    error_page 404 /index.php?$query_string;

    # 301 Redirect URLs with trailing /'s as per https://webmasters.googleblog.com/2010/04/to-slash-or-not-to-slash.html
    rewrite ^/(.*)/$ /$1 permanent;

    # Change // -> / for all URLs, so it works for our php location block, too
    merge_slashes off;
    rewrite (.*)//+(.*) $1/$2 permanent;

    # Handle Do Not Track as per https://www.eff.org/dnt-policy
    location /.well-known/dnt-policy.txt {
        try_files /dnt-policy.txt /index.php?p=/dnt-policy.txt;
    }

    # For WordPress bots/users
    location ~ ^/(wp-login|wp-admin|wp-config|wp-content|wp-includes|(.*)\.exe) {
        return 301 https://wordpress.com/wp-login.php;
    }

    # Access and error logging
    access_log off;
    error_log  /var/log/nginx/dedansacademie.be-error.log error;
    # If you want error logging to go to SYSLOG (for services like Papertrailapp.com), uncomment the following:
    #error_log syslog:server=unix:/dev/log,facility=local7,tag=nginx,severity=error;

    # FORGE SSL (DO NOT REMOVE!)
    # ssl_certificate;
    # ssl_certificate_key;
    ssl_certificate /etc/nginx/ssl/dedansacademie.be/292771/server.crt;
    ssl_certificate_key /etc/nginx/ssl/dedansacademie.be/292771/server.key;

    # SSL/TLS configuration, with TLSv1.0 disabled because it is insecure; note that IE 8, 9 & 10 support
    # TLSv1.1, but it's not enabled by default clients using those browsers will not be able to connect
    ssl_protocols TLSv1.2 TLSv1.1;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/nginx/dhparams.pem;
    ssl_ciphers 'ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5';
    ssl_buffer_size 4k;
    ssl_session_timeout 4h;
    ssl_session_cache shared:SSL:40m;
    ssl_stapling on;
    ssl_stapling_verify on;
    #ssl_trusted_certificate /etc/nginx/ssl/lets-encrypt-x3-cross-signed.pem;

    # FORGE CONFIG (DOT NOT REMOVE!)
    include forge-conf/dedansacademie.be/server/*;

    # Load configuration files from nginx-partials
    include /etc/nginx/nginx-partials/*.conf;

    # Root directory location handler
    location / {
        try_files $uri/index.html $uri $uri/ /index.php?$query_string;
    }

    # Localized sites, hat tip to Johannes -- https://gist.github.com/johanneslamers/f6d2bc0d7435dca130fc

    # If you are creating a localized site as per: https://craftcms.com/docs/localization-guide
    # the directives here will help you handle the locale redirection so that requests will
    # be routed through the appropriate index.php wherein you set the `CRAFT_LOCALE`

    # Enable this by un-commenting it, and changing the language codes as appropriate
    # Add a new location @XXrewrites and location /XX/ block for each language that
    # you need to support

    #location @enrewrites {
    #    rewrite ^/en/(.*)$ /en/index.php?p=$1? last;
    #}
    #
    #location /en/ {
    #    try_files $uri $uri/ @enrewrites;
    #}

    # Craft-specific location handlers to ensure AdminCP requests route through index.php
    # If you change your `cpTrigger`, change it here as well
    location ^~ /admin {
        try_files $uri $uri/ /index.php?$query_string;
    }
    location ^~ /cpresources {
        try_files $uri $uri/ /index.php?$query_string;
    }

    # php-fpm configuration
    location ~ [^/]\.php(/|$) {
        try_files $uri $uri/ /index.php?$query_string;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        # Change this to whatever version of php you are using
        fastcgi_pass unix:/var/run/php/php7.1-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
        fastcgi_param HTTP_PROXY "";

        fastcgi_intercept_errors off;
        fastcgi_buffer_size 16k;
        fastcgi_buffers 4 16k;
        fastcgi_connect_timeout 300;
        fastcgi_send_timeout 300;
        fastcgi_read_timeout 300;
    }

    location ~ /\.ht {
        deny all;
    }
}

# FORGE CONFIG (DOT NOT REMOVE!)
include forge-conf/dedansacademie.be/after/*;

Maybe you should look into this? Since this is a really weird issue ...

nystudio107 / nginx-craft

NGINX error: rewrite or internal redirection cycle while internally redirecting to "/index.php" #11