fix: Check valid params exists in WhatsAapp payload (#6780)

Fixes #6779

Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/services/whatsapp/incoming_message_base_service.rb

@@ -9,9 +9,9 @@ class Whatsapp::IncomingMessageBaseService
   def perform
     processed_params
 
-    if processed_params[:statuses].present?
+    if processed_params.try(:[], :statuses).present?
       process_statuses
-    elsif processed_params[:messages].present?
+    elsif processed_params.try(:[], :messages).present?
       process_messages
     end
   end

app/services/whatsapp/incoming_message_whatsapp_cloud_service.rb

@@ -5,7 +5,7 @@ class Whatsapp::IncomingMessageWhatsappCloudService < Whatsapp::IncomingMessageB
   private
 
   def processed_params
-    @processed_params ||= params[:entry].first['changes'].first['value']
+    @processed_params ||= params[:entry].try(:first).try(:[], 'changes').try(:first).try(:[], 'value')
   end
 
   def download_attachment_file(attachment_payload)