Raise error if no input set instead of just a warning.

aidge_core/export_utils/node_export.py

@@ -187,7 +187,7 @@ class ExportNode(ABC):
                 self.attributes["in_height"][idx] = get_height(tensor)
                 self.attributes["in_width"][idx] = get_width(tensor)
             else:
-                print(f"No input for {self.node.name()}")
+                raise RuntimeError(f"No input for {self.node.name()} at input {idx}")
         for idx, list_child_node_in_id in enumerate(self.node.outputs()):
             self.outputs += [node_in_id[0]
                              for node_in_id in list_child_node_in_id]