From 51ea5a2692cba8c56b935959c65d4d3a5a4f059a Mon Sep 17 00:00:00 2001
From: Jimmy <jimmy@r3e.network>
Date: Sat, 11 May 2024 12:27:41 +0800
Subject: [PATCH] fix CalculateNetworkFee

---
 src/RpcServer/RpcServer.Wallet.cs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/RpcServer/RpcServer.Wallet.cs b/src/RpcServer/RpcServer.Wallet.cs
index cc552a58a..c3e392727 100644
--- a/src/RpcServer/RpcServer.Wallet.cs
+++ b/src/RpcServer/RpcServer.Wallet.cs
@@ -128,9 +128,11 @@ protected virtual JToken CalculateNetworkFee(JArray _params)
             var tx = Convert.FromBase64String(_params[0].AsString());
 
             JObject account = new();
-            var networkfee = Wallets.Helper.CalculateNetworkFee(
+            wallet ??= new DummyWallet(system.Settings);
+            var networkfee =
+                Wallets.Helper.CalculateNetworkFee(
                 tx.AsSerializable<Transaction>(), system.StoreView, system.Settings,
-                wallet is not null ? a => wallet.GetAccount(a).Contract.Script : null);
+                a => wallet.GetAccount(a).Contract.Script);
             account["networkfee"] = networkfee.ToString();
             return account;
         }