Fatal error: Uncaught Error: Interface "Composer\Plugin\PluginInterface" not found in /home/Xereah/public_html/pstruzik/vendor/symfony/flex/src/Flex.php:53 Stack trace: #0 {main} thrown in /home/Xereah/public_html/pstruzik/vendor/symfony/flex/src/Flex.php on line 53