Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app3/public_html/service/app/Http/Controllers/html2text/vendor/sebastian/resource-operations/tests/ResourceOperationsTest.php:17 Stack trace: #0 {main} thrown in /home/app3/public_html/service/app/Http/Controllers/html2text/vendor/sebastian/resource-operations/tests/ResourceOperationsTest.php on line 17