Fatal error: Uncaught TypeError: Return value of Composer\Autoload\ClassLoader::initializeIncludeClosure() must be an instance of Composer\Autoload\void, none returned in /www/htdocs/w014514a/soziale-medien-workshop/wp-content/plugins/wp-maintenance-mode/vendor/composer/ClassLoader.php:580 Stack trace: #0 /www/htdocs/w014514a/soziale-medien-workshop/wp-content/plugins/wp-maintenance-mode/vendor/composer/ClassLoader.php(112): Composer\Autoload\ClassLoader::initializeIncludeClosure() #1 /www/htdocs/w014514a/soziale-medien-workshop/wp-content/plugins/wp-maintenance-mode/vendor/composer/autoload_real.php(26): Composer\Autoload\ClassLoader->__construct('/www/htdocs/w01...') #2 /www/htdocs/w014514a/soziale-medien-workshop/wp-content/plugins/wp-maintenance-mode/vendor/autoload.php(25): ComposerAutoloaderInit77642f81597d409e49cb541bea42a649::getLoader() #3 /www/htdocs/w014514a/soziale-medien-workshop/wp-content/plugins/wp-maintenance-mode/wp-maintenance-mode.php(92): require_once('/www/htdocs/w01...') #4 /www/htdocs/w014514a/sozi in /www/htdocs/w014514a/soziale-medien-workshop/wp-content/plugins/wp-maintenance-mode/vendor/composer/ClassLoader.php on line 580