I am using Blender 2.80. I finished a blender scene and hit ctrl f12 to render. the result is completely black and it spits out all 100 frames in a couple of seconds.i have looked at a lot of troubleshooting pages and none of them have helped fix the situation. i have a spotlight at the camera, world brightness settings are over 1, i know the camera is not obstructed. it also appears that any other blender file I have that has previously rendered before wont do so now. any help would be great, thanks!