fix add ons env variables

app/actions/add_ons/install_helm_chart.rb

@@ -34,8 +34,9 @@ class AddOns::InstallHelmChart
   end
 
   def self.get_values(add_on)
-    values = add_on.metadata['template'].keys.each_with_object({}) do |key, values|
-      template = add_on.metadata['template'][key]
+    variables = add_on.metadata['template'] || {}
+    values = variables.keys.each_with_object({}) do |key, values|
+      template = variables[key]
       if template.is_a?(Hash) && template['type'] == 'size'
         values[key] = "#{template['value']}#{template['unit']}"
       else

spec/local_helper.rb

@@ -4,9 +4,9 @@ RSpec.configure do |config|
     Capybara.app_host = 'http://localhost:3000'
     Capybara.run_server = false
     Capybara.default_host = 'localhost:3000'
-    
+
     # Override default_url_options if they're set elsewhere
     Rails.application.routes.default_url_options[:host] = 'localhost:3000'
     default_url_options[:host] = 'localhost:3000'
   end
-end
+end