Problem with PyYAML installing DASH

Event was removed in Dash 0.36 https://github.com/plotly/dash/blob/master/dash/CHANGELOG.md#0360---2019-01-25

Use event properties instead, for example the n_clicks property instead of the click event

As well as dash.callback_context to know which input changed 📣 Dash Club - Dispatch #4 - Latest Dash Developments