App crashes when no Quotes exist in Core Data

[Yonodactyl]

Describe the bug When you open the app for the first time and go into the settings section and tap export to json the application crashes. The error mentioned:

2020-11-06 21:27:10.719121-0500 Footnote[85377:1996263]
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason:
'+entityForName: nil is not a legal NSPersistentStoreCoordinator for searching for entity name 'Quote''

To Reproduce Steps to reproduce the behavior:

1. Open the app for the first time.
2. Don't add any quotes.
3. Open settings.
4. Export to json

Expected behavior Here I would expect an alert saying that there are no quotes to export. I could also see the button being grayed out/disabled because there is nothing in the core data stack.

Smartphone (please complete the following information):

• Device: Simulator
• OS: 13.0
• Version 1.03

[JapneetSingh5]

Hi, shall I fix this? @cambardell