Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/custompr/psle.custompropackaging.com/vendor/egulias/email-validator/tests/EmailValidator/Validation/MessageIDValidationTest.php:9 Stack trace: #0 {main} thrown in /home/custompr/psle.custompropackaging.com/vendor/egulias/email-validator/tests/EmailValidator/Validation/MessageIDValidationTest.php on line 9