another commit

Web_app/app.py

@@ -662,5 +662,7 @@ def visualize_csv(file_path):
         return f"An error occurred while processing the file: {str(e)}", 500
 
 if __name__ == '__main__':
-    app.run(host='0.0.0.0', port=5000, debug=True)
+    port = int(os.environ.get("PORT", 5000))
+    app.run(host='0.0.0.0', port=port, debug=True)
+