Fatal error: Uncaught Error: Class 'Illuminate\Mail\MailServiceProvider' not found in /var/www/dev/public/vendor/s-ichikawa/laravel-sendgrid-driver/src/MailServiceProvider.php:4 Stack trace: #0 {main} thrown in /var/www/dev/public/vendor/s-ichikawa/laravel-sendgrid-driver/src/MailServiceProvider.php on line 4