Samuel

I am also using 2.2 and i have this error. I just changed composer to use dev-master in order to work

This is a very wonderful package. Thank you. It seems abandoned at the moment @design-revision . No commits since mid-last year

@edmorley Can reactstrap use a recent version of `react-transition-group`? https://github.com/reactstrap/reactstrap/blob/6ea2488c97eb24b0c8f15bbf26b2768921932607/package.json#L261 This error has been fixed in the package since v4. See https://github.com/reactjs/react-transition-group/blob/1fd4a65ac45edd2aea3dec18eeb8b9c07c7eb93f/CHANGELOG.md