arcgis features managers ValueError: The data file provided does not exist or could not be accessed.

[JD5]

I usually call manager.overwrite with a portal item. Is there any reason this is no longer supported?

if data_file and (
  not isinstance(data_file, str)
  or not os.path.exists(data_file)
  or not os.path.isfile(data_file)
):
  raise ValueError(
    "The data file provided does not exist or could not be accessed."
)