Fatal error: Uncaught Error: Class "Illuminate\Mail\Mailable" not found in /home/pcrm.helioho.st/httpdocs/app/Mail/UserNotificationChannelEmailCreated.php:10 Stack trace: #0 {main} thrown in /home/pcrm.helioho.st/httpdocs/app/Mail/UserNotificationChannelEmailCreated.php on line 10