That is not a built-in WordPress item, it would have to of been provided by a plugin or your theme.
Did you remove any plugins or change your theme?
I haven’t changed my theme, so in that case I assume that it would have been triggered by a plugin, however I’m not sure what one would have caused it to do that. I can’t recall deleting any, I’ve just updated them and added elementor.
At any point, were you using a plugin named Jetpack? That’s the most common one for adding Portfolio post types.
No I can’t recall that plugin being installed in the past on this site, it’s a bit tricky because I only just took over control of it, so I don’t have the greatest understanding of what was and what wasn’t on it.
I do have a plugin called Jupiter installed, and WordPress Bakery.
Alternatively is there a way to delete the 404’d pages? I can’t access them from the WordPress admin dashboard.
Edit: Turns out it was a setting in Jupiter that I turned off! Thank you for making me aware that it might have been a plugin, you’re a lifesaver!
