Fatal error: Uncaught Error: Class 'Illuminate\Mail\Mailable' not found in G:\projects\beta.api.edutalk.edu.vn\app\Mail\SendMailBillSinhTrac.php:9
Stack trace:
#0 {main}
thrown in G:\projects\beta.api.edutalk.edu.vn\app\Mail\SendMailBillSinhTrac.php on line 9