add log for upload local video

apps/core/utils.py

@@ -28,6 +28,7 @@ def download_file(url):
 def handle_uploaded_file(f, file_name):
     with open(file_name, 'wb+') as destination:
         for chunk in f.chunks(chunk_size=4097152):
+            print('chunk')
             destination.write(chunk)