When I try activate WPMUDEV dashboard it shows:
Warning: require_once(includes/class-wpmudev-dashboard-ui.php): failed to open stream: No such file or directory in /wp-content/plugins/wpmudev-updates/update-notifications.php on line 135
Fatal error: require_once(): Failed opening required 'includes/class-wpmudev-dashboard-ui.php' wp-content/plugins/wpmudev-updates/update-notifications.php on line 135