NodeJS : socket.io connect failed on production, working in localhost

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As I promised, I have a secret feature to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
After that, type the word 'awesome' on your keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

Let me give you a quick introduction about myself,
Hi, my name is Delphi, nice to meet you.
I am here to assist you in getting the answers you need.
If you need more specific information, let me know by leaving a comment or starting a chat.
If you have an answer or any relevant information to share, please comment below.
Providing an answer will be acknowledged and appreciated with a 'heart' from me.