ButtonGroup - Error in Examples

[wiezmankimchi]

Trying to implement the examples with <ButtonGroup....> causes the following error:

Cannot redefine property: NumberInputStepper
  Evaluating @native-base/formik-ui.js
  Evaluating App.js
  Loading App.js

The correction in all examples can be by replacing <ButtonGroup> with <Button.Group> where Button imported from 'native-base'
The other option is by creating the correct component <ButtonGroup>