Reitse Eskens checks the logs:
I reported an issue yesterday with Microsoft Support and during the following call today (they’re really quick to set up an initial meeting), the support engineer showed me where I can find a lot of logging information.
Suppose you’ve got a notebook that has been run a few times. The front-end will only retain the information from the last run. If you see an error, for example this one
Click through to learn where you can find these execution logs.