This week I found out that my logging stopped working when updating to .NET Core 3.1
Our logging is stored in an Azure Storage blob container. Before your azure can app can do this you’ll have to enable the following setting under: Monitoring -> App service logs
In there, you’ll find the following setting:
Turn Application logging (Blob) ON. To take a look at your logs you can use the Microsoft Azure Storage Explorer!
That’s all! Enjoy!