What to do?
Your theme (XStore Child) contains outdated copies of some WooCommerce template files. These files may need to be updated to ensure they are compatible with the current version of WooCommerce. Recommendations to solve this:
Update your theme to the latest version. If no update is available, please contact the theme author and ask about compatibility with the current WooCommerce version.
If you’ve copied over a template file to make changes, you’ll need to copy the new version of the template and redo your changes.