(bug): 500 error in groups notification

Summary

From the user:

Saw a blue dot on the icon of my closed group "Pounce". Clicked the icon. Got:

HTTP FAILURE RESPONSE FOR HTTPS://WWW.MINDS.COM/API/V1/GROUPS/GROUP/627166806989090821?: 500 OK

Refreshed. Same deal. Got out of Minds. Got in. Same message.

Steps to reproduce

Unable to reproduce

Platform information

Doubt that this is device dependent but Chromebook laptop and Mac Air High Sierra Brave

What is the current bug behavior?

Presumably the link still remains invalid, but is not provided.

What is the expected correct behavior?

No indication of what the notification content was meant to be.

Relevant logs and/or screenshots

https://www.minds.com/newsfeed/943242449769406464

Possible fixes

I suspect that this may be related to #230 (closed), but am unable to replicate.