如何修复django博客评论中的“NoReverseMatch”？

I've tried looking at quite a few posts first, and none of them seem to have an answer to my solution (at least not an obvious one). I'm still very new to Django, so I'm still getting a hang of how everything relates (in terms of the models, views, forms, etc). The blog was originally a carbon-copy of the djangogirls blog from their tutorial, but I wanted to extend it by adding comments from another tutorial on the web. I ran into an error that I couldn't figure out afterwards.I've tried looking at quite a few posts first,