Fatal error: Uncaught Error: Class "Bolt\Extension\SimpleExtension" not found in /home/s4b/public_html/dev/cempre/extensions/vendor/bolt/email-spooler/src/EmailSpoolerExtension.php:15 Stack trace: #0 {main} thrown in /home/s4b/public_html/dev/cempre/extensions/vendor/bolt/email-spooler/src/EmailSpoolerExtension.php on line 15