Still having Google Search Console errors left seem to be related to MEC?

Ok so I’ve been working hard these last few weeks to clear out the hundreds and hundreds of Google Search Console errors I’ve had.

It seems the only errors I have left are related mostly to Modern Events Calendar’s Categories & a few website Tags.

I’ve gotten them down to just 14 errors of “Submitted URL seems to be a Soft 404”

A lot of them seem to be related to the Modern Events Calendar (MEC) and my site tags and categories.

Any idea on how I should clear up these last few errors?

We’ve made some serious headway these last couple weeks, we original started out at hundreds of CSC errors, so we’re getting close thanks to everyone’s help!

The page I need help with: [log in to see the link]