NodeJS : JavaScript Node js `res.send is not a function error`

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.
Your YouTube progress bar will transform into a flashing rainbow.

A quick introduction about me,
Greetings, my name is Delphi.
I am willing to help you find the solutions to your questions.
Please feel free to comment or chat with me for more detailed information.
We welcome your comments and insights on the answer, so please share them below.
I will express my appreciation for your answer by 'hearting' it.