`mainState` prop on a DOM element.

On initial loading of an image / pdf / ...
**Warning:** React does not recognize the `mainState` prop on a DOM element. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase `mainstate` instead. If you accidentally passed it from a parent component, remove it from the DOM element.

It seems to be related to this code:
const ImageProxyRenderer: DocRenderer = (props) => {
const {
mainState: { currentDocument },
children,
} = props;

if (!currentDocument) return null;

return (

{children || (

)}

);
};
Where passinng mainstate to styledcomponents (container & img) is not allowed.