Problems rendering Entire Timeline in Deliver Page with v17.

I am using Resolve 17.2.2 with an iMac Catalina.
I have had this problem 2 times.
After editing my video when I go to the Deliver page it will not let me choose Render: Entire Timeline. It is stuck in In/Out Range.
So when I try to Render my video it will only render the first few seconds and then it stops.
I never set an in and out range in my video. But I was able to solve the problem but putting an In mark at the first frame and an Out mark at the last frame.
On the last video this happened to, at first it was rendering no problem. But after a few renders, the last time I tried to Render it had this problem. All I had done was some color editing after the last Render when I could choose to Render Entire Timeline.
What would cause this problem? Is it a bug in 17.2.2? How can I fix it?
I tried quitting Resolve but it is still a problem when I reopen that file.
I have had this problem 2 times.
After editing my video when I go to the Deliver page it will not let me choose Render: Entire Timeline. It is stuck in In/Out Range.
So when I try to Render my video it will only render the first few seconds and then it stops.
I never set an in and out range in my video. But I was able to solve the problem but putting an In mark at the first frame and an Out mark at the last frame.
On the last video this happened to, at first it was rendering no problem. But after a few renders, the last time I tried to Render it had this problem. All I had done was some color editing after the last Render when I could choose to Render Entire Timeline.
What would cause this problem? Is it a bug in 17.2.2? How can I fix it?
I tried quitting Resolve but it is still a problem when I reopen that file.