I have seen other similar questions but non addresses my problem. I have generated my TLS (openSSL) Self-Signed certificate, but seems not working on my NodeJS server.

Instructions to generate SSL

openssl req -newkey rsa:2048 -keyout key.pem -x509 -days 365 -out certificate.pem

openssl x509 -text -noout -in certificate.pem

openssl pkcs12 -inkey key.pem -in certificate.pem -export -out certificate.p12

openssl pkcs12 -in certificate.p12 -noout -info  // verify certificate

So at the end I have .p12 also known as PFX type certificate. Below is my Node.js code:

    // ------- Start HTTPS configuration ----------------

const options = {

    pfs: fs.readFileSync('./server/security-certificate/certificate.p12'),     
    passphrase: 'secrete2'
};
https.createServer(options, app).listen(8443);

    // -------- End HTTPS configuration -----------------

    // Also listen for HTTP 
var port = 8000;
app.listen(port, function(){
    console.log('running at localhost: '+port);
});

Here is the output when I run curl command, the HTTP request is served correctly, only HTTPS has problem:

Moreover, if I do this:

export CURL_CA_BUNDLE=/var/www/html/node_app/server/security-certificate/cert.p12

Then I get following error:
curl: (77) Problem with the SSL CA cert (path? access rights?)

If I try to access in browser with HTTPS and port, browser says it could not load the page.

Reference links I followed:
Node.js HTTPS:

https://nodejs.org/dist/latest-v8.x/docs/api/https.html#https_https_createserver_options_requestlistener

I'm using AWS RedHat Linux