Update app.py

app.py

@@ -19,6 +19,7 @@ trace_library = {'gases':trace_library_gases,\
 app = dash.Dash(__name__, suppress_callback_exceptions=True)
 app.title = "Bayesian Assessment of Halocarbon Banks"
 app.layout = html.Div(id="page-content", children=home_page())
+server = app.server
 
 register_navigation(app, atmosConc, lifeTimes, prod, trace_library)
 register_gas_plot(app, atmosConc, lifeTimes, prod, trace_library)