Update correlation_explorer_app.py

correlation_explorer_app.py

@@ -216,7 +216,7 @@ def update_visuals(x_var, y_var, year_range, mode, scope, dark_mode):
     heatmap.update_layout(template="plotly_dark" if dark_mode else "plotly_white")
 
     return fig, heatmap, corr_sentence
-
+server = app.server  # Required for gunicorn
 # 5. Run app
 if __name__ == '__main__':
-    app.run(debug=True)
+    app.run_server(debug=True, host='0.0.0.0', port=7860)