Error: .post() requires callback functions but got a [object Undefined] not working

Question

there are several issues with the same theme, but I could not solve my problem.

Error: Route.post() requires callback functions but got a [object Undefined]
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Answer 1

This error usually comes when you mistakenly import functions in the wrong way, or may be a spelling mistake Both the controller and the route are in some trouble.

I encountered this when I was exporting a function from the controller which was all good.

exports.addCategory = (req,res) => {}

but when I was importing it in the routes I was doing

const addCategory = require('../Controllers/Category')

instead

const {addCategory) = require('../Controllers/Category')

you see that curly braces around addCategory while importing So, I was importing the entire function, which was wrong

Answer 2

You are only missing

module.exports = app, or whatever you are exporting. This happened to me many times.