Fatal error: Uncaught Error: Class 'Tests\TestCase' not found in /var/www/html/sigo-laravel/tests/Unit/SendMailLogLembreteMensalidadeVencimentoTest.php:8 Stack trace: #0 {main} thrown in /var/www/html/sigo-laravel/tests/Unit/SendMailLogLembreteMensalidadeVencimentoTest.php on line 8