Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/html/sigo-laravel/vendor/piggly/php-pix/tests/ValidStaticPixTest.php:12 Stack trace: #0 {main} thrown in /var/www/html/sigo-laravel/vendor/piggly/php-pix/tests/ValidStaticPixTest.php on line 12