PHP 7.2 issue on OZH:
Warning: count(): Parameter must be an array or an object that implements Countable in /app/public/wp-content/plugins/ozh-admin-drop-down-menu/inc/core.php on line 311 (first line, below)
if (!count($wp_ozh_adminmenu)) { $wp_ozh_adminmenu = (array)get_option('ozh_adminmenu'); unset($wp_ozh_adminmenu[0]); }
Replace with:
if (!is_array($wp_ozh_adminmenu) || !count($wp_ozh_adminmenu)) { $wp_ozh_adminmenu = (array)get_option('ozh_adminmenu'); unset($wp_ozh_adminmenu[0]); }
Reference Links
https://stackoverflow.com/questions/55146235/countable-issue-for-php-7-2/55146348#55146348