Fatal error: Uncaught Error: Class "Google\Collection" not found in /home/risei/public_html/wp-content/plugins/tutor-pro/vendor/google/apiclient-services/src/Classroom/ModifyAttachmentsRequest.php:20 Stack trace: #0 {main} thrown in /home/risei/public_html/wp-content/plugins/tutor-pro/vendor/google/apiclient-services/src/Classroom/ModifyAttachmentsRequest.php on line 20