First off, I don't have any steps to reproduce but when I put this on the support discord a helper asked me to post it here.

Recently Minecraft would fail to open any worlds. Checking through the logs I found a divide by 0 error. It turns out my render distance had somehow been changed to 0 chunks. Moving the slider would fix this issue and restrict the render distance to the normal bounds.

Here is a pastebin to the logs in question: https://pastebin.com/tGFftL8B