Website is running on http and socketio connections can be established fine but when I configure it for https socketio connections can not be established although rest of the website works fine.

server {
    listen 80 default_server;
    server_name my_domain;
    return 301 https://$server_name$request_uri;

}

server {
    listen 443 ssl;
    server_name my_domain;

    ssl_certificate /etc/letsencrypt/live/domain/fullchain.pem; 
        ssl_certificate_key /etc/letsencrypt/live/domain/privkey.pem; 
        include /etc/letsencrypt/options-ssl-nginx.conf; 
        ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; 


    location / {
        include /etc/nginx/proxy_params;
        proxy_pass http://localhost:8000;
    }

    location /static {
        alias /app/static;
        expires 30d;
    }

    location /socket.io {
        include /etc/nginx/proxy_params;
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass http://127.0.0.1:8000/socket.io;
    }
}

And running the python file with gunicorn

gunicorn3 -k geventwebsocket.gunicorn.workers.GeventWebSocketWorker -w 1 application:app

I have used this exact setup on my local network with self signed certificates it has worked just fine. This time I am using letsencrypt (certbot). What is it that I am doing wrong?

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error on the client side