Update app.py

app.py

@@ -90,10 +90,10 @@ def upload():
         frame_images = []
 
     return redirect(url_for(
-       'index',
-       video_filename=filename,
-       result_image=result_image,
-       frame_images="|".join(frame_images)
+        'index',
+        video_filename=filename,
+        result_image=result_image,
+        frame_images="|".join(frame_images)
     ))  # <-- this is the required closing parenthesis