Category page broke

Hello

I used this plugin in a new theme/site I developed, and upon updating the plugin my category index page broke. I can’t figure out why. If I use an old version of your plugin, it works again. It’s definitely the update that breaks it.

Is there any way I can find out why, or is there a way I can fix it? I can’t even tell what the issue is, I simply get a ‘page not found’ error.

Thanks