Update app.py

app.py

@@ -108,8 +108,10 @@ def uploaded_file(filename):
 
 @app.route('/results/<path:filename>')
 def result_file(filename):
-    user_result_folder = os.path.join('/tmp/results', session['user_id'])
-    print(f"🧾 Serving from session: {user_id} | filename: {filename}")
+    user_id = session.get('user_id', 'unknown')
+    user_result_folder = os.path.join('/tmp/results', user_id)
+    full_path = os.path.join(user_result_folder, filename)
+    print(f"🧾 Serving from: {full_path}")
     return send_from_directory(user_result_folder, filename)
 
 if __name__ == '__main__':