Warning: require(/mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/.maintenance): Failed to open stream: No such file or directory in /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-includes/load.php on line 441

Fatal error: Uncaught Error: Failed opening required '/mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/.maintenance' (include_path='.:/opt/RZphp83/includes') in /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-includes/load.php:441
Stack trace:
#0 /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-includes/load.php(399): wp_is_maintenance_mode()
#1 /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-settings.php(78): wp_maintenance()
#2 /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-config.php(107): require_once('...')
#3 /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-load.php(50): require_once('...')
#4 /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-blog-header.php(13): require_once('...')
#5 /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/index.php(17): require('...')
#6 {main}
  thrown in /mnt/web501/a3/71/512077071/htdocs/STRATO-apps/wordpress_01/app/wp-includes/load.php on line 441