Response
This error sometimes occurs when a file exists with the same path under the Modules directory and under the App Server root, and if the one under the Modules directory cannot evaluate for some reason (for example, because it is a library module). If this is the case, either fix the module under the Modules directory or use a different name for the module that does not exist under the Modules directory.
Stack Overflow: Get the most useful answers to questions from the MarkLogic community, or ask your own question.