From 039ab7baef6e1b3a32bd3c4e798672f7626d7807 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Tue, 23 May 2017 13:41:52 +0200
Subject: fix callBackend when response is null/undefined

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

diff --git a/src/wxApi.ts b/src/wxApi.ts
index f06ab69a7..b74cb9eb1 100644
--- a/src/wxApi.ts
+++ b/src/wxApi.ts
@@ -50,7 +50,7 @@ export function getReserveCreationInfo(baseUrl: string,
 export async function callBackend(type: string, detail?: any): Promise<any> {
   return new Promise<any>((resolve, reject) => {
     chrome.runtime.sendMessage({ type, detail }, (resp) => {
-      if (resp.error) {
+      if (resp && resp.error) {
         reject(resp);
       } else {
         resolve(resp);
-- 
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