Trying to save a Challenge with signups open and a closing date but no opening date gives Error 500

Description

How to reproduce the problem:

1) Create or edit a Gift Exchange or Prompt Meme
2) In Challenge Settings, tick "Sign-up open?
3) Leave "Sign-up opens:" blank
4) Choose a date for "Sign-up closes:"
5) Choose "Submit" (or "Update", if you're editing an existing challenge)

What you expect to have happen:

The challenge profile should now show "Sign-up: Open" and "Sign-up Closes:" with the chosen closing date (open challenges do not show the "Sign-up Opens:" date).

What does happen:

Error 500.

What should happen instead:

The challenge should be successfully created.

Environment

None

Assignee

Sarken

Reporter

Lady Oscar

Roadmap

Challenges

Priority

Medium

Affects versions

Fix versions

Components

BackEnd

Difficulty

Medium

Required Access Level

None

Milestone

Internal 0.9
Configure