Warning: require(/var/www/html/wp-includes/html-api/class-wp-html-doctype-info.php): Failed to open stream: No such file or directory in /var/www/html/wp-settings.php on line 258

Fatal error: Uncaught Error: Failed opening required '/var/www/html/wp-includes/html-api/class-wp-html-doctype-info.php' (include_path='.:/usr/local/lib/php') in /var/www/html/wp-settings.php:258 Stack trace: #0 /var/www/html/wp-config.php(110): require_once() #1 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...') #2 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...') #3 /var/www/html/index.php(18): require('/var/www/html/w...') #4 {main} thrown in /var/www/html/wp-settings.php on line 258

Fatal error: Uncaught Error: Call to a member function set() on null in /var/www/html/wp-includes/l10n.php:857 Stack trace: #0 /var/www/html/wp-includes/l10n.php(960): load_textdomain('default', '/var/www/html/w...', 'de_DE') #1 /var/www/html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain() #2 [internal function]: WP_Fatal_Error_Handler->handle() #3 {main} thrown in /var/www/html/wp-includes/l10n.php on line 857