Server Error in '/' Application.

A potentially dangerous Request.QueryString value was detected from the client (desc="...d 'N' Vacs®").

Description: ASP.NET has detected data in the request that is potentially dangerous because it might include HTML markup or script. The data might represent an attempt to compromise the security of your application, such as a cross-site scripting attack. If this type of input is appropriate in your application, you can include code in a web page to explicitly allow it. For more information, see http://go.microsoft.com/fwlink/?LinkID=212874.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.QueryString value was detected from the client (desc="...d 'N' Vacs®").

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[HttpRequestValidationException (0x80004005): A potentially dangerous Request.QueryString value was detected from the client (desc="...d 'N' Vacs®").]
   System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection) +324
   System.Web.<>c__DisplayClass280_0.<ValidateHttpValueCollection>b__0(String key, String value) +18
   System.Web.HttpValueCollection.EnsureKeyValidated(String key) +86
   System.Web.HttpValueCollection.Get(String name) +18
   Telerik.Sitefinity.Web.OutputCache.OutputCacheHelper.GetOutputCacheItemKey(String path, String verb, CachedVary cachedVary) +631
   Telerik.Sitefinity.Web.OutputCache.OutputCacheHelper.GenerateCachedItemKey(CachedVary cachedVary) +108
   Telerik.Sitefinity.Web.OutputCache.<GetCachedResponse>d__28.MoveNext() +62
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Telerik.Sitefinity.Web.OutputCache.<OnEnterAsync>d__10.MoveNext() +614
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +102
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +64
   Telerik.Sitefinity.Web.OutputCache.TaskAsyncHelper.EndTask(IAsyncResult ar) +76
   Telerik.Sitefinity.Web.OutputCache.SitefinityOutputCacheModule.EndOnResolveRequestCache(IAsyncResult result) +5
   System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +484
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +132
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +163


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0