This will allow a way to tell if a generated report has valid contents or has run into an error/TypeError preventing proper generation. Workflows and API calls will still provide a PDF if there is an error, but the contents for an advanced report will only display the error. Since there is no programmatic way to tell if this has happened, we are hearing about it too long after the fact. Having a way to tell in the workflow or in the API JSON response if the PDF contents ran into an error will allow us to build in automatic checks for issues.