no components allowed

app/models/communication/block/component/image.rb

 class Communication::Block::Component::Image < Communication::Block::Component::Base
+
   def data
+    # Loading the blob when needed, not saved in the database
     @data['blob'] = template.blob_with_id @data['id'] if @data&.has_key? 'id'
     @data
   end
+
 end

app/models/communication/block/template/base.rb

@@ -87,6 +87,10 @@ class Communication::Block::Template::Base
     []
   end
 
+  def elements
+    data['elements']
+  end
+
   def blob_with_id(id)
     university.active_storage_blobs.find id
   end
@@ -138,6 +142,7 @@ class Communication::Block::Template::Base
   end
 
   def components
+    return [] if self.class.fields.nil?
     self.class.fields.map do |field|
       send "#{field[:name]}_component"
     end

app/models/communication/block/template/gallery.rb

@@ -2,7 +2,7 @@ class Communication::Block::Template::Gallery < Communication::Block::Template::
 
   LAYOUTS = [:grid, :carousel].freeze
 
-  has_select :layout, options: LAYOUTS, default: LAYOUTS.first
+  # has_select :layout, options: LAYOUTS, default: LAYOUTS.first
 
   def build_git_dependencies
     add_dependency active_storage_blobs