Update UsersRouter.js

Author: dblythy

src/Routers/UsersRouter.js

@@ -405,7 +405,10 @@ export class UsersRouter extends ClassesRouter {
       };
     } catch (err) {
       if (err.code === Parse.Error.OBJECT_NOT_FOUND) {
-        if (req.config.passwordPolicy.resetPasswordSuccessOnInvalidEmail) {
+        if (
+          !req.config.passwordPolicy ||
+          req.config.passwordPolicy.resetPasswordSuccessOnInvalidEmail
+        ) {
           return {
             response: {},
           };