I created a popup notification in the Project module via a scheduled action to notify task assignees about overdue tasks. It worked on localhost, but it didn’t work on the live Odoo server. So I removed it and implemented it via custom code, which again worked on localhost but not on the live server. Now, in the Discuss module, it shows 'Real Time Connection Lost' on the live server. The popup notification is not appearing, but it shows in the message box.