Error when using Scoped Admins.

[rsdeus]

Describe the bug
When the configuration from Scoped Admins is updated, the following error arises.

NoMethodError (undefined method `with_indifferent_access' for nil:NilClass):
  
decidim-core (0.27.6) lib/decidim/attribute_object/form.rb:82:in `hash_from'
decidim-core (0.27.6) lib/decidim/attribute_object/form.rb:72:in `from_params'
decidim-decidim_awesome (0.10.2) app/forms/decidim/decidim_awesome/admin/config_form.rb:50:in `from_params'
decidim-core (0.27.6) app/controllers/concerns/decidim/form_factory.rb:65:in `from_params'
decidim-decidim_awesome (0.10.2) app/controllers/decidim/decidim_awesome/admin/config_controller.rb:26:in `update'

To Reproduce
Steps to reproduce the behavior:

1. Go to the 'Decidim Awesome' tab and select 'Scoped Admins'.
2. Click on 'Add a new "Scoped Admins" group'.
3. Click on 'Update configuration'.
4. Check for errors in the log file or browser if in a development environment.

Expected behavior
The configuration update

Desktop (please complete the following information):

• Debian 12
• firefox, chrome
• 0.10.2

Additional context
Modifying the code at line 26 in the config_controller.rb file.
from:
@form = form(ConfigForm).from_params(params[:config])
to:
@form = form(ConfigForm).from_params(params[:config] || {})

Solves the problem.