Server Error in '/' Application.

Telerik.Web.UI.RadTabStrip with ID='RadTabStrip1' was unable to find an embedded skin with the name 'Forest'. Please, make sure that the skin name is spelled correctly and that you have added a reference to the Telerik.Web.UI.Skins.dll assembly in your project. If you want to use a custom skin, set EnableEmbeddedSkins=false.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Telerik.Web.UI.RadTabStrip with ID='RadTabStrip1' was unable to find an embedded skin with the name 'Forest'. Please, make sure that the skin name is spelled correctly and that you have added a reference to the Telerik.Web.UI.Skins.dll assembly in your project. If you want to use a custom skin, set EnableEmbeddedSkins=false.

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:


[InvalidOperationException: Telerik.Web.UI.RadTabStrip with ID='RadTabStrip1' was unable to find an embedded skin with the name 'Forest'. Please, make sure that the skin name is spelled correctly and that you have added a reference to the Telerik.Web.UI.Skins.dll assembly in your project. If you want to use a custom skin, set EnableEmbeddedSkins=false.]
   Telerik.Web.SkinRegistrar.GetEmbeddedSkinAttributes(ISkinnableControl control, Type controlType, Boolean designTime) +483
   Telerik.Web.SkinRegistrar.RegisterCssReferences(ISkinnableControl control) +481
   Telerik.Web.UI.RadDataBoundControl.RegisterCssReferences() +34
   Telerik.Web.UI.RadDataBoundControl.ControlPreRender() +54
   Telerik.Web.UI.RadTabStrip.OnPreRender(EventArgs e) +64
   System.Web.UI.Control.PreRenderRecursiveInternal() +90
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Control.PreRenderRecursiveInternal() +163
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +906


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0