Safe navigation

.rubocop.yml

   Exclude:
     - 'db/schema.rb'
 
-# Offense count: 1
-# Configuration parameters: Whitelist.
-# Whitelist: present?, blank?, presence, try, try!
-Lint/SafeNavigationChain:
-  Exclude:
-    - 'app/controllers/api_controller.rb'
-
 # Offense count: 30
 Metrics/AbcSize:
   Max: 71

app/controllers/api_controller.rb

 
   # Require user to be a member of group OR admin, requires @group set
   def require_membership!
-    return if current_person&.groups.include?(@group) || current_person&.is_admin?
+    return if current_person&.groups&.include?(@group) || current_person&.is_admin?
 
     @message = I18n.t('authentication.membership_required')
     render 'api/error', status: :forbidden