NodeJS : Getting CORS error while using socket.io / nginx / node

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

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Next, enter the letters 'awesome' on your keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

A little intro about me,
Hi, my name is Delphi, nice to meet you.
I am capable of providing answers to your questions.
If you require more detailed information, please don't hesitate to comment or chat with me.
Don't hesitate to share your answer or insights on the answer by leaving a comment below.
A 'heart' from me will be given to show my gratitude for your contribution.