React does not recognize the initialValue prop on a DOM element

[justlearncode]

Warning: React does not recognize the initialValue prop on a DOM element. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase initialvalue instead. If you accidentally passed it from a parent component, remove it from the DOM element.

I'm receiving the above error when I add {...title} or {...categories} or {...content} to the input tag.

I'm referring to this line in my code.
https://github.com/justlearncode/REACT-REDUX-FORM/blob/master/src/components/posts_new.js#L25