I don't know - with just a screenshot, there's not much I can do to help. Maybe you could provide some more helpful information, like:
What platform are you on
Have you tried rendering multiple times
Does this also happen on other pieces
Have you tried rendering with the Basic render framework
window10 on notebook
i try a lot and it totally stuck on this page , can't press any button.
although i use alt+f4 to close and retry again.
3. every single pieces.
4.I start with basic render at first.
for now i try to use AVPRO
Are you saying it worked with AVPro? If so, using that should work great.