if error return

[FarahZaqout]

posts-project/src/middleware/authentication.js

Line 5 in 543acb9

if (err) reject(err);

I'm not 100% sure about this but i think this might return null inside the then function. If that happens, all sorts of problems might happen in your code.

try to throw an error and see if resolve will return null. I'm too lazy to do it.