Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/mulwnet/beta.mulw.net/vendor/egulias/email-validator/tests/EmailValidator/Validation/NoRFCWarningsValidationTest.php:11 Stack trace: #0 {main} thrown in /home/mulwnet/beta.mulw.net/vendor/egulias/email-validator/tests/EmailValidator/Validation/NoRFCWarningsValidationTest.php on line 11