fix: - [line 2057](https://github.com/fsmosca/Python-Easy-Chess-GUI/blob/541f920be0b96ce6d5961fa17db0e28f0afaad18/python_easy_chess_gui.py#L2057): add `window,` - same for [line 2280](https://github.com/fsmosca/Python-Easy-Chess-GUI/blob/541f920be0b96ce6d5961fa17db0e28f0afaad18/python_easy_chess_gui.py#L2280)
