Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/mohamma2/public_html/subdomains/vendor/pear/net_dns2/tests/NetDNS2/resolver/ResolverTest.php:20 Stack trace: #0 {main} thrown in /home/mohamma2/public_html/subdomains/vendor/pear/net_dns2/tests/NetDNS2/resolver/ResolverTest.php on line 20