You see the 403 error page (correct) but, I think it's not clear for UX since the administrator is editing a budget, and doesn't need to know that he needs to have the Polls feature enabled to be able to use the booths. 😅
403 error page
Notes
I think would be a good idea to disable the button and show a message like:
The feature Polls must be enabled to create booths. You can enable it from the settings configuration page.
Description
Administrators see a 403 error when try to create a booth for a Participatory Budget and Polls feature is disabled.
Steps to reproduce
403 error page
Notes
I think would be a good idea to disable the button and show a message like:
Mockup