Child theme issue

Replies: 0

Since upgrading to the latest WordPress, I’m getting error messages in my error log:

PHP Warning:  call_user_func_array() expects parameter 1 to be a valid callback, function 'child_parent_styling' not found or invalid function name in /home/******/public_html/wp/wp-includes/class-wp-hook.php on line 298
PHP Warning:  call_user_func_array() expects parameter 1 to be a valid callback, function 'child_site_info' not found or invalid function name in /home/******/public_html/wp/wp-includes/class-wp-hook.php on line 298

Any help would be appreciated, thank you.