網站顯示500錯誤或是520錯誤會有很多種原因
一般常見情況比較會是主機出現問題、htaccess檔案問題、駭客導致網站檔案感染…等
但在確認主機沒有任何問題之後
才發現本次出現這個狀況則是因為Cloudflare出現異常所導致
解決方式可以暫時關閉cdn，也就是讓Proxy狀態呈現灰色
但會導致網站SSL憑證錯誤，就需要從主機重新頒發一個SSL給網站
這是wp社團有人發出的客服問答紀錄
客服問答紀錄（原文）
The Cloudflare is down, and that is why multiple functions at Cloudways are down as well
we are in contact with Cloudflare team and trying to get this resolved as soon as possible
This outage that we all are facing is due to an outage on a very large data center,that is why multiple network in the world are down
please allow it some time to get resolved