Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/instituto/public_html/sapc/laravel/vendor/sebastian/diff/tests/Utils/UnifiedDiffAssertTraitIntegrationTest.php:21 Stack trace: #0 {main} thrown in /home/instituto/public_html/sapc/laravel/vendor/sebastian/diff/tests/Utils/UnifiedDiffAssertTraitIntegrationTest.php on line 21