How to solve "Callback must be a function"?

Question

JavaScript

I decided to put myself an outdated version 3 of Express.js, installed it. I created a directory, went into it and entered into the console express -s -e. It gave an error:

$ express -s -e

   create : .

   install dependencies:
     $ cd . && npm install

   run the app:
     $ node app

fs.js:157
  throw new ERR_INVALID_CALLBACK();
  ^

TypeError [ERR_INVALID_CALLBACK]: Callback must be a function
    at maybeCallback (fs.js:157:9)
    at Object.fs.writeFile (fs.js:1276:14)
    at write (C:\Users\Влад\AppData\Roaming\npm\node_modules\express\bin\express:41
2:6)
    at C:\Users\Влад\AppData\Roaming\npm\node_modules\express\bin\express:385:5
    at C:\Users\Влад\AppData\Roaming\npm\node_modules\express\bin\express:427:11
    at C:\Users\Влад\AppData\Roaming\npm\node_modules\express\node_modules\mkdirp\i
ndex.js:48:26

Answer 1

What is the node version?