Using "getdatasubsetdownloadlinkfromprocess()" to export excel, the process is not triggering.

I am using "getdatasubsetdownloadlinkfromprocess()" in the linkfield to export an excel on click on the link it navigate to untitled window and there is no instance in monitoring space. has anyone faced this before ? 

let me know if u have any solution?

Server Log Error:

ERROR com.appiancorp.ps.exceltools.servlet.ExportDataSubsetToExcelFromProcessServlet - Conclude process did not finish within timeout.