I just find out that one of my blog got hacked. The intruder put a file in wp-content directory and cause 404 error .
Wow, huge one (77,630) error.
What I’ve done to fix this error :
- Delete the page ; xx-data.php
- Select all error from google search console and click ‘Mark as Fixed’
- Request xx-data.php removal from Google index
Let see if I see another error. Will update this post soon.