Fatal error: Uncaught Error: Class "OpenStack\Common\Resource\OperatorResource" not found in /home/tzuovhm/tzuovhm/3rdparty_/php-opencloud/openstack/src/BlockStorage/v2/Models/VolumeAttachment.php:13 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/3rdparty_/php-opencloud/openstack/src/BlockStorage/v2/Models/VolumeAttachment.php on line 13