An N was missing...

routes/api/account/index.js

@@ -123,7 +123,7 @@ router.put('/username', authorization.needed(), (req, res, next) => {
     })
     .catch(error => {
       if (error.code === 11000) {
-        next(errors.ErrUsernameTake);
+        next(errors.ErrUsernameTaken);
       } else {
         next(error);
       }

services/users.js

@@ -257,7 +257,7 @@ module.exports = class UsersService {
               if (err) {
                 if (err.code === 11000) {
                   if (err.message.match('Username')) {
-                    return reject(errors.ErrUsernameTake);
+                    return reject(errors.ErrUsernameTaken);
                   }
                   return reject(errors.ErrEmailTaken);
                 }