Reverse Proxying 2 servers not working on nginx

NOTE: I fixed the reverse proxying thing by just restarting, seems like 127 days of uptime was too much for my windows desktop. I still need help with the ssl part so any help would be really appreciated.

SSL Problem

As for the SSL part, I cannot guess why does it not work. Here is my full and final configuration for kra.domain.in

worker_processes auto;

events {
    worker_connections 768;
}
 
http {
    server {
        listen   80;
        server_name kra.domain.in www.kra.domain.in;

        location / {
            proxy_pass http://127.0.0.1:5500;
        }
    }

    server {
        listen   443 ssl;
        server_name kra.domain.in www.kra.domain.in;

        ssl_certificate    /nginx/ssl/ssl-bundle.crt;
        ssl_certificate_key    /nginx/ssl/private.key;

        location / {
            proxy_pass http://127.0.0.1:5500;
        }
    }
}

This is my Virtual IP group on my Fortinet Firewall Virtual IPv4 Group on Firewall

I have also updated the administration settings to not use 443 port.

As for the SSL Certificate, I used ZeroSSL to generate my SSL Certificate, and followed the steps provided at this link: https://help.zerossl.com/hc/en-us/articles/360058295894-Installing-SSL-Certificate-on-NGINX

I merged the files using cat (git bash) and you can see my hosts file there. I have no further clue why would this not work.

Fixed Problem, this problem was fixed, please help on the above one

I have been having this problem for about a week now, and I thought of asking this here because well nothing else worked.

So, I am using nginx on windows, and have reverse proxied my external/public IP to 127.0.0.1:5500. That worked sufficiently at the time, about a month ago but I couldn't get ssl working, we will get back to it in a second. This was my configuration for single reverse proxy on my domain kra.domain.in, and it worked flawlessly, and still works flawlessly. Except for the SSL part which wasn't mandatory for my application to work, but I am considering to add SSL there because I might need it.

So, the SSL didn't work in my case the commented configuration is what I used for the SSL part, port 443 is open from my firewall too. I got the certificate from ZeroSSL, and nginx gave me no errors for the configuration or key matching part either, just the 443 port or https port of my network didn't respond.