Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/symfony/yaml/Tests/YamlTest.php:17
Stack trace:
#0 {main}
thrown in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/symfony/yaml/Tests/YamlTest.php on line 17