Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Mail\Mailable' not found in /home/caistbuw/public_html/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php:19
Stack trace:
#0 {main}
thrown in /home/caistbuw/public_html/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php on line 19