8 – Drupal8 field of view in Twig

I need to convert the following D7 to D8 in my twig file of view. I have tried the following but it does not work.

Code D7:

result[$id]-> field_field_document_upload[0]["rendered"]["#file"]-> file size; ?>

Code D8 in Twig:

            {{see resulthttps://drupal.stackexchange.com/q/276964.field_field_document_upload[0]["rendered"]["#file"].file size }}

What's the problem