After Effects error: zero denominator in ratio addition 17::16

I'm still a noob when it comes to After Effects, and I have looked everywhere on how to fix this issue. My last resort was asking on here. I don't know what information is needed to figure out the problem, so I'll explain what I can. I have windows 10. This stupid error only started popping up since yesterday, when I tried going onto graph editor to view the speed graph. On both the value and speed graph, the keyframes weren't visible. The one time they were, I only managed to modify one before After Effects crashed. I tried again a few more times, and got the same result. This isn't a problem with importing a composition, just editing the graph. Restarting or uninstalling and reinstalling has not helped. Has anyone else experienced this error? Because for some reason there's no trace of it, where I've looked. This is really frustrating and I want to fix it soon. Please help! Here's a screenshot of the popup I get: