Fix options strip issues

server/src/api/routes/AuthRoutes.js

@@ -101,7 +101,7 @@ export class AuthRoutes {
     if (isValid) {
       user.loginToken = loginToken.pack(user._id.toString(), user.email)
     } else {
-      user.loginToken = null // A bad login removes existing token for this user...
+      user.loginToken = undefined // A bad login removes existing token for this user...
     }
 
     const savedUser = await user.save()
@@ -120,7 +120,7 @@ export class AuthRoutes {
     const user = await User.findById({ _id: req.user._id })
 
     if (user) {
-      user.loginToken = null
+      user.loginToken = undefined
       await user.save()
     }