I have a Web Site and Azure SQL database. In the App Service under Settings->Backup I have it configured to backup daily the site and database. For 2 years it worked fine, on April 1, 2021 the backup started failing with the following error: "Object reference not set to an instance of an object." The site as well as database are operating without issue. There have been no recent updates to either the site or database and the database size and site are under the 10g limit. I reset the Backup Configuration and create a new one but the same error resulted.