Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/repo/invoicing-salepropos/vendor/phpunit/php-timer/tests/TimerTest.php:17 Stack trace: #0 {main} thrown in /var/www/html/repo/invoicing-salepropos/vendor/phpunit/php-timer/tests/TimerTest.php on line 17