Exceptions thrown when logging out from certain screens

[emilnormann]

Description

If you log out while you are on 'create citizen' screen or 'new activity' screen it throws an error, it still logs you out.
They throw different errors but are assumed to be related.

To Reproduce
Steps to reproduce the behavior:
Way one:

1. Login
2. Enter a weekplan for a citizen
3. Press '+' to add new activity
4. Logout on current screen
   Way two:
5. Login
6. Press 'Tilføj Borger'
7. Logout on current screen

Expected behavior
The user is expected to be logged out without any errors.

Actual behavior and screenshots
These are screenshots from the console from experiencing the bug.

Sub Tasks

Could potentially be solved by solving #636 and #638