my website hoster will soon switch all accounts from PHP 7.0 to PHP 7.2. So I installed a clone of my current WordPress installation in order to test it with PHP 7.2. When I have PHP 7.0 activated then everything works fine. But when I'm switching to PHP 7.2 I'm getting a weird error message from one of the plugins.
Warning: Use of undefined constant TABBER_TABS_DIR - assumed 'TABBER_TABS_DIR' (this will throw an Error in a future version of PHP) in /home/xeccbike/public_html/testing/wp-content/plugins/tabber-tabs-widget/tabber-tabs.php on line 31
30: / Set constant path to the plugin directory.
31: define( TABBER_TABS_DIR, plugins_url('tabber-tabs-widget/'));
33: // Load Language
34: load_plugin_textdomain('tabber-tabs-widget', false, TABBER_TABS_DIR . 'language');
Does anyone have an idea what that could be? Any hints are appreciated. Thanks