Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /home/successforkids/public_html/wp-content/plugins/simple-sitemap/vendor/dealerdirect/phpcodesniffer-composer-installer/src/Plugin.php:35 Stack trace: #0 {main} thrown in /home/successforkids/public_html/wp-content/plugins/simple-sitemap/vendor/dealerdirect/phpcodesniffer-composer-installer/src/Plugin.php on line 35