Hi Maria,
It depends on the contents of the child theme.
It may just be a simple line of PHP within the child theme’s functions.php but it can also be a page template file if you’re using one.
If you’re using the child theme only for its functions.php, you can try removing snippets and see if the conflict stops occurring. This way, you can pinpoint the culprit code and figure out an alternative to it if what the snippet does is necessary. ๐