Embedded interop type '%1!ls!' is defined in both '%2!ls!' and '%3!ls!'. Some operations on objects of this type are not ...

Embedded interop type '%1!ls!' is defined in both '%2!ls!' and '%3!ls!'. Some operations on objects of this type are not supported while debugging. Consider casting this object to type 'dynamic' when debugging or building with the 'Embed Interop Types' property set to false.