Fatal error: Uncaught Error: Interface "Helhum\ConfigLoader\Processor\Placeholder\PlaceholderInterface" not found in /var/www/html/dev.hallescherfc.de/vendor/helhum/config-loader/src/Processor/Placeholder/ConfigurationPlaceholder.php:17 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/helhum/config-loader/src/Processor/Placeholder/ConfigurationPlaceholder.php on line 17