Enhanced Input Action asset is missing

Why: A node references the InputAction '{ia}' which was deleted, renamed, or never created. The compiler can't bind to it.

Fix: In Content Browser, search for '{ia}'. If found: re-link the node by dropping it on the workspace + replacing the broken reference. If missing: create the InputAction (Content Browser → right-click → Input → Input Action), then add it to your InputMappingContext.