App Crashing

[JAghazada]

Hello,

When you request localhost://5000/api/upload with another mimetype, server crashes.
But I don't know the cause of this problem. And I mean at that moment the Error Handler Middleware is not running.

[JAghazada]

and in upload.js file you forgot return cb in line 9.
line:9

cb(new Error("Bu Resim Tipi Desteklenmemektedir. Lütfen Farklı Bir Resim Seçiniz !"), false)