From b5353551a8a8eef6bbfe38b64456671f944ed27e Mon Sep 17 00:00:00 2001
From: Kyle Spearrin <kyle.spearrin@gmail.com>
Date: Sat, 21 Jul 2018 00:32:41 -0400
Subject: [PATCH] null check on u2f challenge

---
 src/models/response/twoFactorU2fResponse.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/models/response/twoFactorU2fResponse.ts b/src/models/response/twoFactorU2fResponse.ts
index 334b7994e8..7ab62cc627 100644
--- a/src/models/response/twoFactorU2fResponse.ts
+++ b/src/models/response/twoFactorU2fResponse.ts
@@ -4,7 +4,7 @@ export class TwoFactorU2fResponse {
 
     constructor(response: any) {
         this.enabled = response.Enabled;
-        this.challenge = new ChallengeResponse(response.Challenge);
+        this.challenge = response.Challenge == null ? null : new ChallengeResponse(response.Challenge);
     }
 }