Fatal error: Uncaught Error: Class 'WP_Widget' not found in /homepages/7/d290885545/htdocs/widget/Random Rythm/random-rhythm/random_rhythm.php:37 Stack trace: #0 {main} thrown in /homepages/7/d290885545/htdocs/widget/Random Rythm/random-rhythm/random_rhythm.php on line 37