diff --git a/config/environments/development.rb b/config/environments/development.rb
index c401b984b4..f7d46c1922 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -64,7 +64,7 @@
   config.assets.quiet = true
 
   # Raises error for missing translations.
-  config.action_view.raise_on_missing_translations = false
+  config.i18n.raise_on_missing_translations = false
   config.i18n.fallbacks = false
 
   # Enable rack-attack middleware for protecting against brute-force login attempts
diff --git a/config/environments/production.rb b/config/environments/production.rb
index eb0b2ad201..489e770d6f 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -113,7 +113,7 @@
   end
 
   # Raises error for missing translations
-  config.action_view.raise_on_missing_translations = false
+  config.i18n.raise_on_missing_translations = false
 
   # Enable rack-attack middleware for protecting against brute-force login attempts
   config.middleware.use(Rack::Attack)
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 3790e8b06d..dcc15953ff 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -51,7 +51,7 @@
   # config.active_record.verbose_query_logs = true
 
   # Raises error for missing translations.
-  config.action_view.raise_on_missing_translations = false
+  config.i18n.raise_on_missing_translations = false
 
   # Enable rack-attack middleware for protecting against brute-force login attempts,
   # but disable it until needed.
diff --git a/config/initializers/blueprinter_serializers.rb b/config/initializers/blueprinter_serializers.rb
index cb774a32a2..d41aa124db 100644
--- a/config/initializers/blueprinter_serializers.rb
+++ b/config/initializers/blueprinter_serializers.rb
@@ -1,6 +1,9 @@
 # frozen_string_literal: true
 
 Blueprinter.configure do |config|
-  config.default_transformers = [LowerCamelTransformer]
-  config.sort_fields_by = :definition
+  # Wrapper to autoload classes and modules needed at boot time.
+  Rails.application.reloader.to_prepare do
+    config.default_transformers = [LowerCamelTransformer]
+    config.sort_fields_by = :definition
+  end
 end
diff --git a/spec/factories/responses.rb b/spec/factories/responses.rb
index 863cb29b58..91f86d54af 100644
--- a/spec/factories/responses.rb
+++ b/spec/factories/responses.rb
@@ -229,7 +229,7 @@ def self.rank_attributes(tree_parent)
 
     trait :with_odk_attachment do
       transient do
-        xml_path nil
+        xml_path { nil }
       end
       odk_xml do
         Rack::Test::UploadedFile.new(
diff --git a/spec/features/sms/sms_guide_spec.rb b/spec/features/sms/sms_guide_spec.rb
index 30ee1048b7..34997e8850 100644
--- a/spec/features/sms/sms_guide_spec.rb
+++ b/spec/features/sms/sms_guide_spec.rb
@@ -42,13 +42,13 @@
     end
 
     around do |example|
-      bool = Rails.configuration.action_view.raise_on_missing_translations
+      bool = Rails.configuration.i18n.raise_on_missing_translations
       ELMO::Application.configure do
-        config.action_view.raise_on_missing_translations = false
+        config.i18n.raise_on_missing_translations = false
       end
       example.run
       ELMO::Application.configure do
-        config.action_view.raise_on_missing_translations = bool
+        config.i18n.raise_on_missing_translations = bool
       end
     end