nginx configuration with proxy to server

example.ca

server {
  listen 80;
  listen [::]:80;
  server_name example.ca www.example.ca;

  location / {
    root /home/toby/client;
    index index.html
    try_files $uri $uri/ /index.html;
  }

  location /api/ {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;
    proxy_pass http://127.0.0.1:3000/;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";

    proxy_redirect off;
  }


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


  if ($scheme != "https") {
    return 301 https://$host$request_uri;
  } # managed by Certbot
}