In the older version of PHP, the source code that was written for the theme has some irregularities so it needs to be updated.
In the wp-content/themes/your-theme-name/anps-framework/classes/AnpsStyle.php (or Style.php) we have to change the function anps_save_fonts() following:
public function anps_save_fonts() { $names = array('font_type_1', 'font_type_2', 'font_type_navigation'); foreach ($_POST as $name => $value) { // NOTE: The abbreviated if statement did not work well, so it was replaced with live code. if (in_array($name, $names)) { $fonts = explode('|', $value); update_option($name, $fonts[0]); update_option(str_replace('type', 'source', $name), $fonts[1]); } else { update_option($name, $value); } } header("Location: themes.php?page=theme_options&sub_page=theme_style&sub_page=typography"); }