The NPrinting API exposes TaskExecutions which returns the overall status and progress of a task execution. What is not exposed is the task execution log information. This information is retrieved on the dashboard via the following endpoint.
https://{host}:{port}/npe/executions/{id}
This endpoint doesn't appear to be integrated with the NP API because the authentication (and cookie information) appears to use a manual login and not the API login functionality.
Please add an endpoint (something like TaskExecutionsLog) to the NP API.
See the Qlik forun discussion for more information:
https://community.qlik.com/t5/Qlik-NPrinting-Discussions/Get-Task-Status-Logs-via-API/m-p/1791517#M3...
