I am working with Sitecore 9.0 update 2 on Azure.
Server is scale out : 1CM and 3CD.
After email campaign is run, we can receive email but reporting is not working. It doesn't have any data is as shown.
I checked in Campaigns table in database, data isn't stored.
In addition, I saw an error when I open email that is sent by EXM 1724 11:57:37 ERROR Failed to get a registration result Exception: System.NullReferenceException Message: Object reference not set to an instance of an object. Source: Sitecore.EmailCampaign.Cd
Any suggestion for this issues ?
Open and click rates show after i open email but report is not updated