Haakam Aujla

Plot resample=True: DataError: No numeric types to aggregate

4

### Expected Behavior No errors, plot shows. ### Actual Behavior ``` /usr/local/lib/python3.7/dist-packages/backtesting/_plotting.py:104: UserWarning: Data contains too many candlesticks to plot; downsampling to '15T'. See `Backtest.plot(resample=...)` warnings.warn(f"Data contains too many candlesticks...