Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/flexinettek/public_html/vendor/fzaninotto/faker/test/Faker/Calculator/LuhnTest.php:8 Stack trace: #0 {main} thrown in /home/flexinettek/public_html/vendor/fzaninotto/faker/test/Faker/Calculator/LuhnTest.php on line 8