- Replaced `np.NaN` with `None` to ensure compatibility with NumPy 2.x. - Prevents AttributeError during backtesting in freqtrade with NumPy 2.x.
- Replaced `np.NaN` with `None` to ensure compatibility with NumPy 2.x. - Prevents AttributeError during backtesting in freqtrade with NumPy 2.x.