Spotfire Python Data Function - 'Python Script DataFunction'

[Jonathan Holliday 2]

Installed the Python Data Function on SF 10.3 and python 3.8. I'm able to successfully run python code with input parameters, but when I try to output data, it fails with the following message. In doing research, I found many threads around the same issue. I've ensuredproper labeling and typing of input/output parameters, proper installation of python 3.8, proper installation of numpy and pandas. Any other ideas

Could not execute function call 'Python Script DataFunction'

File not found: C:UsersXXXXAppDataLocalTemptmpCA48.stdf

at Spotfire.Dxp.Data.Import.FileDataSource..ctor(String filePath, String[] additionalFilePaths)

at SpotfirePS.DataFunctions.Python.PythonDataFunctionExcecutor.d__4.MoveNext()

at Spotfire.Dxp.Application.Extension.CustomDataFunctionExecutor.d__5.MoveNext()

at Spotfire.Dxp.Data.DataFunctions.DataFunctionExecutorService.d__3.MoveNext()