Scheduling & Routing -> Activity tab does not provide a detailed explanation for the cancellation.
A Canceled status does not give you further details on the cause... Because the server has restarted, an user has stopped the loading, scheduling has reached the end time and the analysis has not loaded completely or anything else... Adding some more details on the reason when hovering the status could help administrators to know more about the reason, without having to check the logs for the reason.
Thank you for your consideration.