Hi again,
I have activated the main theme and found the website is working normally.
The child-theme you created is wrong and has a lot of extra files leading to the error as you can see.
You need to recreate the child-theme and just add the necessary customizations to the child-theme like the css style (style.css file) or the custom code to the functions.php file.
All your customizations cause errors that make the website inoperable, we are not responsible for fixing it for you.
In case you want to re-customize the theme but don’t know how, give us your customization requirements, we will customize it for you, but this request will incur a fee.