make check for binary work for str and Path objects

#

import logging

import os.path

from pathlib import Path

from typing import Optional, Union

            "The network simulator binary was not found! Please check the configuration."

        )

    if error_pattern is not None:

        if not os.path.exists(os.path.realpath(error_pattern)):

        if not Path(error_pattern).exists():

            raise FileNotFoundError(

                f"The network simulator error profile file {error_pattern} was not found! Please check the configuration."

            )