Child Page error

I made a recent post but it came off as more of a custom request, so I’m going to simplify my issue.

I’m trying to upload a child header page but I am getting a critical error when I do it.

I am using ‘style 3’ header, so when I upload header-style-3.php to /(mychildtheme)/parts/header/, I get a critical error. Why would that happen? Am I missing a file I need to upload?

Currently in my child theme, I have:

functions.php
style.css
screenshot.png
/parts/header/header-style-3.php

Thank you

Nevermind. I did a search on forum and someone suggested uploading all the files from the /header/ folder into the child. That seems to have worked. Clearly header-style-x requires something else from that folder.