cloner cannot backup

Hello,

After our WordPress moved to hosting and updated core and plugins, xcloner cannot backup with following error:

{“readyState”:4,”responseText”:”<p>這個網站發生重大問題 (There is a major problem with this site)。</p><p>進一步瞭解 WordPress 中的偵錯方式(Learn more about debugging in WordPress)</p>”,”status”:500,”statusText”:”error”}

Thanks