Certbot and Nginx issue

I have a raspberry running ubuntu which has Nginx running two sites on it. I configured TLS on of those sites with certbot. (wordpress and dokuwiki)

Both of these sites work without any issues.

I wanted to host a 3rd site from here a Mantis website for bug tracking. I made the nginx basic config installed the site... the site is up and running it works as it should. But when I try to provision TLS with certbot it breaks the whole thing; all the elements and gui breaks.

Has anyone ran into a problem like this before? If i revert the .conf changes that certbot made it revert to normal but without ssl.

Here is the original before certbot touched it:

server {
   listen 80;
   server_name example.eu www.example.eu;
   access_log /var/log/nginx/mantis-access.log;
   error_log /var/log/nginx/mantis-error.log;
   error_page 404 =200 /error.html;
   root /var/www/example/mantis;
   index index.php;
   location / {
      try_files $uri /index.php$is_args$args;
   }

   location ~ \.php$ {
      include snippets/fastcgi-php.conf;
      fastcgi_pass unix:/var/run/php/php8.2-fpm.sock;
      include fastcgi_params;
   }
}

AND here it is after certbot went through its script:

server {
   server_name example.eu www.example.eu;
   access_log /var/log/nginx/mantis-access.log;
   error_log /var/log/nginx/mantis-error.log;
   error_page 404 =200 /error.html;
   root /var/www/example.eu/mantis;
   index index.php;
   location / {
      try_files $uri /index.php$is_args$args;
   }
   location ~ \.php$ {
      include snippets/fastcgi-php.conf;
      fastcgi_pass unix:/var/run/php/php8.2-fpm.sock;
      include fastcgi_params;
   }

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

server {
   if ($host = www.example.eu) {
      return 301 https://$host$request_uri;
   } # managed by Certbot

   if ($host = example.eu) {
      return 301 https://$host$request_uri;
   } # managed by Certbot

   listen 80;
   server_name example.eu www.example.eu;
   return 404; # managed by Certbot
}

Any ideas or pointers would be much appreeciated.