fix type error for now

corrlib/meas_io.py

@@ -12,7 +12,7 @@ import shutil
 from typing import Any
 
 
-def write_measurement(path: str, ensemble: str, measurement: dict[str, dict[str, dict[str, Any]]], uuid: str, code: str, parameter_file: str) -> None:
+def write_measurement(path: str, ensemble: str, measurement: dict[str, dict[str, dict[str, Any]]], uuid: str, code: str, parameter_file: Union(Any, None)) -> None:
     """
     Write a measurement to the backlog.
     If the file for the measurement already exists, update the measurement.