1. Create an event w/ a valid image URL 2. Update the event w/ `""` for image URL What should happen: - The event is updated with an empty image URL (or sets that column value to `null`) What currently happens: - `Validation error: Image must must be a valid URL` See [Here](https://github.com/rit-sse/node-api/blob/13d8a73cd3f48ac3b26b950b47128f1098124726/models/event.js#L38-L44)