Rails 7: init @@session in frontend methods to avoid uninitialized class variable error

app/controllers/application_forms_controller.rb

@@ -298,8 +298,8 @@ class ApplicationFormsController < ApplicationController
   end
 
   def show_data
-
-  	time_now = Time.now
+    @@session = OrbitHelper.request.session rescue {}
+    time_now = Time.now
 
     params = OrbitHelper.params
 
@@ -664,7 +664,7 @@ class ApplicationFormsController < ApplicationController
   end
 
   def add_file
-
+    @@session = OrbitHelper.request.session rescue {}
     if !@@session[:application_form_main_id].blank?
 
       application_form = ApplicationFormMain.find_by(id: @@session[:application_form_main_id])
@@ -688,7 +688,7 @@ class ApplicationFormsController < ApplicationController
   end
 
   def edit_file
-
+    @@session = OrbitHelper.request.session rescue {}
     params = OrbitHelper.params
     if !@@session[:application_form_main_id].blank?
       application_form = ApplicationFormMain.find_by(id: @@session[:application_form_main_id])
@@ -707,7 +707,7 @@ class ApplicationFormsController < ApplicationController
   end
 
   def con_upload
-
+    @@session = OrbitHelper.request.session rescue {}
     time_now = Time.now
 
     if !@@session[:application_form_main_id].blank?