Maximum amount of error modals / popups

[MeesvanStraten]

Describe the bug
Currently when an error occurs a model/popup is displayed. If you presh a button multiple times or the error is receive multiple times from the backend multiple modals are stacked upon each other.

Set a maximum amount of modals / errors to display.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
Only a single error popup is displayed.