Error 500 for topic 271

  1. View https://discourse.practicalzfs.com/c/-/2 with the default theme
  2. click, or Control-click the topic entitled Is there a way to send messages?

Expected

Topic 271.

Actual result

Error 500 for https://discourse.practicalzfs.com/t/is-there-a-way-to-send-messages/271/1

Yeah, that appears to be a bug in the post-voting plugin. The user who posted that thread deleted it, and whenever someone clicks it, it generates log messages showing errors in post-voting.