Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Mail\Mailer" not found in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/laravel/framework/src/Illuminate/Support/Testing/Fakes/MailFake.php:10 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/laravel/framework/src/Illuminate/Support/Testing/Fakes/MailFake.php on line 10