diff --git a/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/AspNetCore/ExceptionHandling/DefaultExceptionToErrorInfoConverter.cs b/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/AspNetCore/ExceptionHandling/DefaultExceptionToErrorInfoConverter.cs
index 16fae96db6..eeddb2e9be 100644
--- a/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/AspNetCore/ExceptionHandling/DefaultExceptionToErrorInfoConverter.cs
+++ b/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/AspNetCore/ExceptionHandling/DefaultExceptionToErrorInfoConverter.cs
@@ -42,7 +42,7 @@ namespace Volo.Abp.AspNetCore.ExceptionHandling
         {
             var errorInfo = CreateErrorInfoWithoutCode(exception, includeSensitiveDetails);
 
-            if (exception is IHasErrorCode hasErrorCodeException && hasErrorCodeException.Code.IsNullOrWhiteSpace())
+            if (exception is IHasErrorCode hasErrorCodeException)
             {
                 errorInfo.Code = hasErrorCodeException.Code;
             }
diff --git a/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/Http/Client/AbpRemoteCallException.cs b/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/Http/Client/AbpRemoteCallException.cs
index 43fb00b03a..cd438685a3 100644
--- a/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/Http/Client/AbpRemoteCallException.cs
+++ b/framework/src/Volo.Abp.ExceptionHandling/Volo/Abp/Http/Client/AbpRemoteCallException.cs
@@ -15,13 +15,7 @@ namespace Volo.Abp.Http.Client
 
         public RemoteServiceErrorInfo Error { get; set; }
 
-        public AbpRemoteCallException(string message)
-            : base(message)
-        {
-
-        }
-
-        public AbpRemoteCallException(string message, Exception innerException)
+        public AbpRemoteCallException(string message, Exception innerException = null)
             : base(message, innerException)
         {
 
diff --git a/framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/ClientProxying/ClientProxyBase.cs b/framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/ClientProxying/ClientProxyBase.cs
index 984a1aa3e1..66dbe4f3cd 100644
--- a/framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/ClientProxying/ClientProxyBase.cs
+++ b/framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/ClientProxying/ClientProxyBase.cs
@@ -6,8 +6,6 @@ using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Threading;
 using System.Threading.Tasks;
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
 using Microsoft.Extensions.Primitives;
 using Volo.Abp.Content;
@@ -28,7 +26,6 @@ namespace Volo.Abp.Http.Client.ClientProxying
     {
         public IAbpLazyServiceProvider LazyServiceProvider { get; set; }
 
-        protected ILogger<ClientProxyBase<TService>> Logger => LazyServiceProvider.LazyGetService<ILogger<ClientProxyBase<TService>>>(NullLogger<ClientProxyBase<TService>>.Instance);
         protected IClientProxyApiDescriptionFinder ClientProxyApiDescriptionFinder => LazyServiceProvider.LazyGetRequiredService<IClientProxyApiDescriptionFinder>();
         protected ICancellationTokenProvider CancellationTokenProvider => LazyServiceProvider.LazyGetRequiredService<ICancellationTokenProvider>();
         protected ICorrelationIdProvider CorrelationIdProvider => LazyServiceProvider.LazyGetRequiredService<ICorrelationIdProvider>();