Fatal error: Uncaught Error: Class "Concrete\Core\Foundation\Command\Command" not found in /home/elcrestweb/public_html/concrete/src/User/Command/UpdateUserAvatarCommand.php:9 Stack trace: #0 {main} thrown in /home/elcrestweb/public_html/concrete/src/User/Command/UpdateUserAvatarCommand.php on line 9