Error in cd_client.log file for DXA 1.5 Application

Question

While running the web application of my project (DXA 1.5 & SDL Web 8), I get below error in cd_client.log file.

ERROR [Sdl.Web.Delivery.ADF.Ambient Runtime.OnRequestStart] - Failed to send claim store

Exception Details:

EXCEPTION: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NotSupportedException: Specified method is not supported.

StackTrace:

2018-04-16 21:29:54 ERROR [Sdl.Web.Delivery.ADF.AmbientRuntime.ExecuteODataAction] - Failed to send claimstore
               EXCEPTION:
               System.Reflection.TargetInvocationException: Exception has been thrown 
 by the target of an invocation. ---> System.NotSupportedException: Specified method is not supported.
                  at System.Web.HttpResponseStream.get_Length()
                  --- End of inner exception stack trace ---
                  at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
                  at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
                  at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
                  at Sdl.Web.Delivery.Core.ReflectionUtils.<>c__DisplayClass37_0.<GetGetMethodByReflection>b__0(Object source)
                  at Sdl.Web.Delivery.Core.JsonParser.TrySerializeUnknownTypes(Object input, Object& output)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeObject(IEnumerable keys, IEnumerable values, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeObject(IEnumerable keys, IEnumerable values, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeObject(IEnumerable keys, IEnumerable values, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeObject(IEnumerable keys, IEnumerable values, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeObject(IEnumerable keys, IEnumerable values, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.SerializeValue(Object value, StringBuilder builder)
                  at Sdl.Web.Delivery.Core.JsonParser.Serialize(Object obj)
                  at Sdl.Web.Delivery.ADF.ClaimStore.ClaimStore.SeraializeJson()
                  at Sdl.Web.Delivery.ADF.AmbientRuntime.ExecuteODataAction(HttpApplication application, IDictionary contextItems, Boolean requestStart, Boolean sessionIsNew)

Any idea why this is coming, and how this can be avoided?

Thanks, Sharad

Answer 1

The error is not specific to DXA; it occurs in the Ambient Data Framework.

Looking at the Stack Trace, it seems that there is some claim with an unexpected type (HttpResponseStream ?!) which cannot be serialized by the JSON serializer used in the ADF.

Did something change recently with regard to your ADF claims? It may be best to contact SDL Support to get this issue further analyzed.

UPDATE:

You mentioned this error has always been there, but doesn't affect the functionality of your web app. Since the error seems rather blocking for ADF, I'm wondering if you really need ADF for your web app in the first place.
If not, you can simply disable it altogether. ADF is known to cause significant performance overhead, so by disabling ADF you will not only get rid of these weird errors in the log, but you will also get significantly better performance.

ADF is required for several product features:

• Session Preview (XPM)
• Experience Optimization
• Audience Manager
• User Generated Content
• Context Expressions

If you are not using any of those features and not using ADF yourself in your implementation, it is recommended to disable it.

For DXA.NET, ADF can be disabled by removing the AmbientFrameworkModule in your Web.config (under /configuration/system.webserver/modules)