Status of 409 (Conflict)

Replies: 1

Hi,
I have get an error on my website:
https://ibb.co/r7qNjtb
I have tried to deactivate all plugin except contact form 7, and activate 2019 theme, but this error is still existed.
Has anyone received this type of error, and if so, can you tell me how you fixed it and what was the root cause? Any help is greatly appreciated.
Thanks!!

• This topic was modified 2 hours, 1 minute ago by vietrg211.
• This topic was modified 2 hours ago by vietrg211.
• This topic was modified 1 hour, 54 minutes ago by vietrg211.