Machine Learning Shipment ETA Prediction Error

Summary: I`m trying to use the Shipment ETA Prediction functionality, but runs into error when I run the action Perform Training.

Also I`m unable to delete any of the previous Projects.

Content (please ensure you mask any confidential information):The initial action to load data into analytics works fine and I have been able to load over 6k shipments, but when I run the Perform Training action it runs into below error -

Error while making Perform Training REST Call for scenario: A.SHIPMENT-ETA-V2, project: A.SHIPMENT-ETA-V2, workflow: null [[ACTIVE] ExecuteThread: '60' for queue: 'weblogic.kernel.Default (self-tuning)']