Using a button returned by another callback as input


I’ve been trying to use a button returned after a file is loaded to generate a graph, but the problem is that there is a AttributeError: 'Div' object has no attribute 'keys', whenever I try to use the button in the callback @app.callback(Output('graph-div', 'children'), [Input('output-data-upload', 'children')]) def draw_graph(n_clicks): pass

The section of the callback that returns the button is

return html.Div([
                u'✅ Data successfully loaded and appears ready',
                #TODO: Add callback for button
                html.Button('Draw Graphs', id='draw-button'),

Any help would be really appreciated, I’ve been drawing a blank after looking around at forums, and trying other ways of accessing the button!