diff --git a/YLErpDAL/Modules/SuperviseReportModule/SAC/Common/Sac_TranslateHelper.cs b/YLErpDAL/Modules/SuperviseReportModule/SAC/Common/Sac_TranslateHelper.cs
index 822f4c2e..4a2bc9a5 100644
--- a/YLErpDAL/Modules/SuperviseReportModule/SAC/Common/Sac_TranslateHelper.cs
+++ b/YLErpDAL/Modules/SuperviseReportModule/SAC/Common/Sac_TranslateHelper.cs
@@ -117,6 +117,12 @@ namespace YLErp.Modules.SuperviseReportModule.SAC.Common
     [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = true)]
     public class SacDescriptionAttribute : Attribute
     {
+        // Attribute.TypeId 本质是 System.Type，Newtonsoft 序列化会触发
+        // "Method may only be called on a Type for which Type.IsGenericParameter is true."
+        // 预览页用 ToJson() 序列化 SacInfo/List<SacInfo> 时崩溃，故显式跳过该成员。
+        // （13.0.1 安全版对 Type 成员序列化行为变更后暴露此问题）
+        public bool ShouldSerializeTypeId() => false;
+
         /// <summary>
         /// 字段名
         /// </summary>
diff --git a/YLErpWeb/App/ExceptionMiddleware.cs b/YLErpWeb/App/ExceptionMiddleware.cs
index a0c469d2..5163baaa 100644
--- a/YLErpWeb/App/ExceptionMiddleware.cs
+++ b/YLErpWeb/App/ExceptionMiddleware.cs
@@ -37,13 +37,15 @@ namespace YLErp.Web.App
 
             try
             {
-                message = GetInnerExceptionMessage(exception);
+                // 暴露完整异常（类型 + 所有内层 message + 堆栈），不再只取最内层 message，
+                // 便于定位根因（如 SacInfo 序列化 TypeId 触发的 IsGenericParameter 反射异常）。
+                message = exception.ToString();
 
                 if (serviceExpcetion == null || serviceExpcetion.IsFaultError)
                 {
                     var result = await request.BodyReader.ReadAsync();
                     var reqBody = ConvertBufferToString(result.Buffer);
-                    LogFactory.GetLogger(context.Request.Path.Value).Error(serviceExpcetion ?? exception, $"[query]:{request.QueryString.Value};[body]:{reqBody}");
+                    LogFactory.GetLogger(context.Request.Path.Value).Error(serviceExpcetion ?? exception, $"[query]:{request.QueryString.Value};[body]:{reqBody}\r\n{message}");
                 }
             }
             catch (Exception ex)
@@ -77,16 +79,5 @@ namespace YLErp.Web.App
             ReadOnlySpan<byte> span = readOnlySequence.IsSingleSegment ? readOnlySequence.First.Span : readOnlySequence.ToArray().AsSpan();
             return System.Text.Encoding.UTF8.GetString(span);
         }
-
-        private static string GetInnerExceptionMessage(Exception ex)
-        {
-            var exceptionStr = ex.Message;
-            while (ex.InnerException != null)
-            {
-                exceptionStr = ex.InnerException.Message;
-                ex = ex.InnerException;
-            }
-            return exceptionStr;
-        }
     }
 }
\ No newline at end of file