When attempting to access notebooks in ArcGIS Online, the following error message is returned:
Error: An ArcGIS Notebook Server is not currently configured.
Publish a hosted layer to assign a hive service to the organization. Refer to ArcGIS Online: Publish hosted feature layers for more information and instructions to publish a hosted feature layer in ArcGIS Online.
To access notebooks in ArcGIS Online, subscribe to a full organizational account. Refer to ArcGIS Online: Manage trial subscription for more information.