From 1eee31e9f1ae4b359e8e8672c4d4630c19d39c69 Mon Sep 17 00:00:00 2001
From: "nicolas.dorier" <nicolas.dorier@gmail.com>
Date: Mon, 4 Jun 2018 12:01:30 +0900
Subject: [PATCH] Fix rate bug: Sometimes coinaverage is sending null bid and
 ask

---
 BTCPayServer/Services/Rates/CoinAverageRateProvider.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/BTCPayServer/Services/Rates/CoinAverageRateProvider.cs b/BTCPayServer/Services/Rates/CoinAverageRateProvider.cs
index 79562daa1..1b6e83b01 100644
--- a/BTCPayServer/Services/Rates/CoinAverageRateProvider.cs
+++ b/BTCPayServer/Services/Rates/CoinAverageRateProvider.cs
@@ -85,7 +85,8 @@ namespace BTCPayServer.Services.Rates
             {
                 JToken bid = p.Value["bid"];
                 JToken ask = p.Value["ask"];
-                if (!decimal.TryParse(bid.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v1) ||
+                if (bid == null || ask == null ||
+                    !decimal.TryParse(bid.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v1) ||
                     !decimal.TryParse(ask.Value<string>(), System.Globalization.NumberStyles.AllowExponent | System.Globalization.NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var v2) ||
                     v1 > v2 ||
                     v1 <= 0 || v2 <= 0)