Are you using the same source for each scene or you created several sources for each scene?
Log file please
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I've included my logs from the evening.  I dont see any from my stream earlier that morning.  Here's some info that may help as well:
- I use a 2 PC set up to stream. Cameras are hooked up to stream PC directly, I've used NDI in the past for a couple sources but none are being used during the stream or later that evening.  (I may not have deleted the NDI sources from every scene)
- I streamed in the morning with no issues, using the only scene collection that was working properly (lucky coincidence, had used a blank collection between switching to desired collection) 
- Noticed the problem in the evening when trying to stream again.  switched collections and found camera not working.  That's where the logs start, i believe.  I began tinkering at that point.
- I stream on Twitch, YT, and FB via OBS.  On the stream, there's a couple times where my recording studio is in plane view during a break in gameplay. (Don't know if that's helpful but just in case)
-all other cameras seem to be working fine for the time being (2 additional cameras, logitech c922 and logitech c615)
Thanks for looking into it, I really appreciate it