Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/bitacora/public_html/bitacora/vendor/luecano/numero-a-letras/tests/NumeroALetrasTest.php:8 Stack trace: #0 {main} thrown in /home/bitacora/public_html/bitacora/vendor/luecano/numero-a-letras/tests/NumeroALetrasTest.php on line 8