The SIS integration checker in Admin is not working

Fatal error: Uncaught Error: Class 'Framework\Files\Bucket' not found in /var/www/vhosts/admin.cte-360.com/httpdocs/Helpers/SISIntegrations/PowerSchool.php:34 Stack trace: #0 /var/www/vhosts/admin.cte-360.com/httpdocs/Controllers/Subdomain.php(48): Helpers\SISIntegrations\PowerSchool->__construct('7e41eed8-48c8-4...', '5f6d3d1f-96db-4...', 'https://powersc...') #1 /var/www/vhosts/admin.cte-360.com/httpdocs/Framework/Router/ControllerCaller.php(231): Controllers\Subdomain->SisConnection(Array) #2 /var/www/vhosts/admin.cte-360.com/httpdocs/index.php(52): Framework\Router\ControllerCaller::call_global() #3 {main} thrown in /var/www/vhosts/admin.cte-360.com/httpdocs/Helpers/SISIntegrations/PowerSchool.php on line 34