Fatal error: Uncaught Error: Interface 'WPStaging\Framework\Interfaces\ShutdownableInterface' not found in /home/savsol/public_html/wp-content/plugins/wp-staging/Backend/Modules/Jobs/Job.php:25 Stack trace: #0 {main} thrown in /home/savsol/public_html/wp-content/plugins/wp-staging/Backend/Modules/Jobs/Job.php on line 25