Internal Server Error when checking Task status via API

When a process task contains any non-import/export action and some action within it fails, a request to get the Task status via the API fails with "Internal Server Error" and HTTP status 500. The issue can also manifest in the UX with message "The model is busy" when an action fails within the process, or a generic failure in CloudWorks. No information about how the action truly failed is returned to the user. 

To find out how the action failed, run the process manually in the model. To stop the issue from appearing over the API, via the UX or CloudWorks, remove any non-import/export actions from the process and run them separately if needed.