Module does not support Output suffix
I am new at this, I'm using an older MacBook Pro. I am trying to render a 4 second video. There is nothing in my render queue except for this 4 second project. And no matter what option I choose for the output, I get the same error message "After Effects error, this module does not support getting output suffixes 39 :: 96" the project itself is a 3D animation with a black background, and the only thing I've done is get rid of the background using the roto brush tool. Also the video only plays for .02 seconds in the preview. Nothing seems to be working, I'll take any advice I can get.
