fix type error

Author: magdaaniol

radicli/util.py

@@ -298,6 +298,9 @@ def get_arg(
     """Generate an argument to add to argparse and interpret types if possible."""
     if isinstance(param_type, str) and param_type in BASE_TYPES_MAP:
         param_type = BASE_TYPES_MAP[param_type]
+    # Ensure param_type is not a string before passing to ArgparseArg
+    if isinstance(param_type, str):
+        param_type = None
     arg = ArgparseArg(
         id=param,
         arg=orig_arg,