diff --git a/src/Infrastructure/BotSharp.Abstraction/Utilities/StringExtensions.cs b/src/Infrastructure/BotSharp.Abstraction/Utilities/StringExtensions.cs
index ea6bb8ec..0270133c 100644
--- a/src/Infrastructure/BotSharp.Abstraction/Utilities/StringExtensions.cs
+++ b/src/Infrastructure/BotSharp.Abstraction/Utilities/StringExtensions.cs
@@ -122,6 +122,11 @@ public static class StringExtensions
             return s;
         }
 
+        if (value is DateTime d)
+        { 
+            return d.ToString("o");
+        }
+
         if (value is JsonElement elem
             && elem.ValueKind == JsonValueKind.String)
         {
diff --git a/src/Infrastructure/BotSharp.Core/Routing/RoutingService.InvokeFunction.cs b/src/Infrastructure/BotSharp.Core/Routing/RoutingService.InvokeFunction.cs
index a009b88f..69909ac9 100644
--- a/src/Infrastructure/BotSharp.Core/Routing/RoutingService.InvokeFunction.cs
+++ b/src/Infrastructure/BotSharp.Core/Routing/RoutingService.InvokeFunction.cs
@@ -67,7 +67,7 @@ public partial class RoutingService
         }
         catch (JsonException ex)
         {
-            _logger.LogError($"The input does not contain any JSON tokens:\r\n{message.Content}");
+            _logger.LogError($"The input does not contain any JSON tokens:\r\n{message.Content}\r\n{ex.Message}");
             message.StopCompletion = true;
             message.Content = ex.Message;
         }