Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /home/custom/public_html/katiekarr/vendor/php-http/discovery/src/Composer/Plugin.php:39 Stack trace: #0 {main} thrown in /home/custom/public_html/katiekarr/vendor/php-http/discovery/src/Composer/Plugin.php on line 39