Something is not working correctly with Community Poll.

Something is not working correctly with Community Poll. I created several polls and created a module "Community Polls Random" and displayed it on the homepage. I accidentally closed a poll and when I reopened it, I got a 500 error and the homepage no longer loads. See the image. I tried with another poll and the same thing happened. So, from one error to another, I ended up closing three polls. I haven't tried with others to avoid damaging all the work I've done. This is a serious issue, not just for mobile.