Missing title. Missing body.
It is impossible to answer this @Phontakorn Kunyabut without a lot more information. Your best bet is to submit a support ticket so we can view your full config and files. It may be an issue with your FB developer access. We can only know through a ticket.
Thank you for your answer @Rose Power-Wowza Community Manager
Happy New Year 2020
I’m having the same problem. Ticket created.