Here is the screenshot for you check:
what might caused this issue please?
After several times check, I found it was caused by Pods(https://wordpress.org/support/topic/big-trouble-to-remove-it/)
I can not fixed it no matter what I did by reinstall or delete both Anspress and Pods.
Also, I found this issue will also happen on any other subsite if it was happened on a subsite, it seems quite serious issue.
You suggestion to fix it would be highly appreciated.