Error

Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. The type NCS.Webpart.SubSiteThanhTra.CSDL.MenuCSDL.MenuCSDL, NCS.Webpart.SubSiteThanhTra, Version=1.0.0.0, Culture=neutral, PublicKeyToken=797bab8ad590544c could not be found or it is not registered as safe. Correlation ID: 6e2d11a1-711f-a0b0-1844-c339a5f3acb3.