Can't export my storyboard into a video

[gloveandpenston]

I used to be able to export my storyboards into videos maybe about a year or two ago when I first started using this program. I took a break for a long while, and all of a sudden, when I come back and click on "export video", I get an error message. I've looked wherever I could for a fix for this, but that is nowhere to be found for me.