Fatal error: Uncaught Error: Interface "Http\Client\Common\Plugin" not found in /home/wilpf/public_html/pms/vendor/php-http/client-common/src/Plugin/HeaderAppendPlugin.php:22 Stack trace: #0 {main} thrown in /home/wilpf/public_html/pms/vendor/php-http/client-common/src/Plugin/HeaderAppendPlugin.php on line 22