Fatal error: Uncaught Error: Interface 'Depicter\GuzzleHttp\Promise\TaskQueueInterface' not found in /var/www/courses.riftvalley.net/wordpress/wp-content/plugins/depicter/modules/GuzzleHttp/Promise/TaskQueue.php:18 Stack trace: #0 {main} thrown in /var/www/courses.riftvalley.net/wordpress/wp-content/plugins/depicter/modules/GuzzleHttp/Promise/TaskQueue.php on line 18