Hi Victoria!
Thanks a ton for getting in touch and welcome to the forums. 🙂
I see what you mean–those Open Mic events are shown in the Related Events area but clicking on them results in a 404 error. That’s no good!
Quick question: do you use any caching plugins on your site? Or perhaps, does your theme or host use caching? I wasn’t able to replicate the issue in my test site, but I’m wondering if your site isn’t caching those events and attempting to display them when they technically don’t exist.
Another question: do those Open Mic events still exist in your Trash? If so, try permanently deleting them to see if that makes a difference.
If those events are still popping up after those two steps, then please try running through the troubleshooting steps outlined here. It’s a bit of a long shot and but I think it’s certainly worth doing since 404 errors are involved.
Let’s start here and see what we find. 🙂
Cheers!
Geoff