Website is Gone

Using FTP, try to replace the wp-settings.php file from a freshly downloaded WordPress copy from

http://ww.wp.xz.cn/download/

If that doesn’t solve the issue,

try to replace wp-admin, wp-includes and all other files in the root except for the contents of wp-comtent folder.

Please do remember to back up your wp-content folder as it has all your uploads, themes and plugins.

If the issue persists even after doing all these, let me know.