#3020
ThemeofWP
Keymaster

Please copy a blank functions.php into the child theme. Do this in parent theme functions:

if ( ! function_exists( 'themeofwp_top_ajax_login' ) ) {
    function theme_special_nav() {
        //  Do something.
    }
}

and use this in child theme functions.php

function themeofwp_top_ajax_login() {
// Do something.
}