From f13d7c305f02f77aa48cc579f678a96e4f319a25 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=BF=97=E5=90=8C?= <chenzhitong12@hotmail.com>
Date: Wed, 18 Nov 2020 10:54:58 +0800
Subject: [PATCH 1/2] Update LogReader.cs (#401)

* Update LogReader.cs

* update
---
 src/ApplicationLogs/LogReader.cs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/ApplicationLogs/LogReader.cs b/src/ApplicationLogs/LogReader.cs
index 60eb903f9..8e6f551d5 100644
--- a/src/ApplicationLogs/LogReader.cs
+++ b/src/ApplicationLogs/LogReader.cs
@@ -68,6 +68,7 @@ public void OnPersist(StoreView snapshot, IReadOnlyList<Blockchain.ApplicationEx
                 JObject trigger = new JObject();
                 trigger["trigger"] = appExec.Trigger;
                 trigger["vmstate"] = appExec.VMState;
+                trigger["exception"] = GetExceptionMessage(appExec.Exception);
                 trigger["gasconsumed"] = appExec.GasConsumed.ToString();
                 try
                 {
@@ -150,5 +151,17 @@ public bool ShouldThrowExceptionFromCommit(Exception ex)
         {
             return false;
         }
+
+        string GetExceptionMessage(Exception exception)
+        {
+            if (exception == null) return "Engine faulted.";
+
+            if (exception.InnerException != null)
+            {
+                return GetExceptionMessage(exception.InnerException);
+            }
+
+            return exception.Message;
+        }
     }
 }

From f0a3ab61d747d197b502d5f3efa75467990dbd97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=BF=97=E5=90=8C?= <chenzhitong12@hotmail.com>
Date: Fri, 20 Nov 2020 18:03:01 +0800
Subject: [PATCH 2/2] [RpcServer] Update RpcServer.SmartContract.cs (#400)

* Update RpcServer.SmartContract.cs

* Update src/RpcServer/RpcServer.SmartContract.cs

Co-authored-by: Shargon <shargon@gmail.com>

* update

Co-authored-by: Owen Zhang <38493437+superboyiii@users.noreply.github.com>
Co-authored-by: Shargon <shargon@gmail.com>
---
 src/RpcServer/RpcServer.SmartContract.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/RpcServer/RpcServer.SmartContract.cs b/src/RpcServer/RpcServer.SmartContract.cs
index 9146c91d1..4fed465ad 100644
--- a/src/RpcServer/RpcServer.SmartContract.cs
+++ b/src/RpcServer/RpcServer.SmartContract.cs
@@ -63,7 +63,7 @@ public void SerializeUnsigned(BinaryWriter writer)
 
         private JObject GetInvokeResult(byte[] script, Signers signers = null)
         {
-            Transaction tx = new Transaction
+            Transaction tx = signers == null ? null : new Transaction
             {
                 Signers = signers.GetSigners(),
                 Attributes = Array.Empty<TransactionAttribute>(),