When ever you are getting this error , just be sure that this property was bind in you Entity Framework.
Just open your .edmx file , go to the properties and then set the property of the "Metadata Artifact Processing" to "Embed in Output Assembly". That's all your problem is fixed.
Just open your .edmx file , go to the properties and then set the property of the "Metadata Artifact Processing" to "Embed in Output Assembly". That's all your problem is fixed.
