Fatal error: Uncaught Error: Class "Illuminate\Mail\Mailable" not found in /home/webmasc/terasend/app/Mail/TradeSubmittedToTreasurerMail.php:12 Stack trace: #0 {main} thrown in /home/webmasc/terasend/app/Mail/TradeSubmittedToTreasurerMail.php on line 12