node env

server/config.js

 const config = {
-    env: process.env.NODEENV || 'development',
+    env: process.env.NODE_ENV || 'development',
     port: process.env.PORT || 3001,
     jwtSecret: process.env.JWT_SECRET || 'My_Secret_Key',
     mongoDbUri: process.env.MONGEDB_URI || 'mongodb://localhost/shopping-mall',