So the entire error seems to be coming from a test post by @SoapDog's surface go.

I've posted my full details here:
https://github.com/ssbc/ssb-msgs/pull/11/files#r299367419

So somehow one of the mentions is actually just a null object.
Since this is a pub server, what is the best way of reseting my database and how can i make sure this broken message doesn't end up back in my DB?