fontFamily "rubik" is not a system font and has not been loaded through Font.loadAsync. and Warning: componentWillMount has been renamed, and is not recommended for use. See https://fb.me/react-unsafe-component-lifecycles for details.

[idsus]

fontFamily "rubik" is not a system font and has not been loaded through Font.loadAsync. and Warning: componentWillMount has been renamed, and is not recommended for use. See https://fb.me/react-unsafe-component-lifecycles for details.

These are the errors that I am getting.