RPC call failed because the function does not exist in any script attached

I have 4 gameobjects:

1. GameController_General
2. GameController_Input
3. Hand
4. Card

each one with his control-script as a component:

1. GestoreTurno
2. InputController
3. HandController
4. CardController

All of them are in the scene from the beginning except Card which is instantiated via Network.instantiate.
The process involves also game-logic data structures so right after the instantiation I need to do stuff on the Card.

I tried...

RPC call failed because the function does not exist in any script attached