Deprecated: Symfony\Component\DependencyInjection\Dumper\YamlDumper::getServiceCall(): Implicitly marking parameter $reference as nullable is deprecated, the explicit nullable type must be used instead in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/symfony/dependency-injection/Dumper/YamlDumper.php on line 312

Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Dumper\Dumper" not found in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/symfony/dependency-injection/Dumper/YamlDumper.php:38 Stack trace: #0 {main} thrown in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/symfony/dependency-injection/Dumper/YamlDumper.php on line 38