Steps to reproduce

In testapp.conf define server definition:
server {
listen *:3009;
listen 443 ssl;
server_name www.abctest.com;

    ssl_certificate /etc/letsencrypt/live/abctest.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/abctest.com/privkey.pem;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers HIGH:!aNULL:!MD5;

    # Turn on Passenger
    passenger_enabled on;
    passenger_ruby /usr/local/rvm/gems/ruby-2.3.1/wrappers/ruby;

    location /testapp/ {
        root   /var/www/html/rails_app/testapp/public;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto https;
        proxy_redirect off;
        proxy_pass http://0.0.0.0:3009;
    }

}

Error: An error occurred during a connection to raghuwanshi.com. SSL received a record that exceeded the maximum permissible length. Error code: SSL_ERROR_RX_RECORD_TOO_LONG
Error on console: HTTP parse error, malformed request (): #<Puma::HttpParserError: Invalid HTTP format, parsing fails

I don't know why it happens. I have verified SSL certificate and pointing my app to the domain without https properly. Where am I wrong?

I need to certify my app with SSL.

System configuration
Ruby version: 2.3.1
Rails version: 5.1.4
Puma version: 3.7