Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/app3/public_html/service/app/Http/Controllers/html2text/vendor/phpunit/php-code-coverage/tests/_files/NotExistingCoveredElementTest.php:4 Stack trace: #0 {main} thrown in /home/app3/public_html/service/app/Http/Controllers/html2text/vendor/phpunit/php-code-coverage/tests/_files/NotExistingCoveredElementTest.php on line 4