Fix React warnings
Open http://localhost:3000/a/overview and observe the warnings reported by React:
Warning: Encountered two children with the same key,
react-autowhatever-1-input. Keys should be unique so that components maintain their identity across updates. Non-unique keys may cause children to be duplicated and/or omitted — the behavior is unsupported and could change in a future version. ...
Fix the code so there are no warnings.