[Python+Backtrader] Krasser-Fehler in Backtrader, wenn man keine Daten einspeist stürzt Backtrader einfach ab.

[fehlerbeheber]

2021-05-13 19:47:15.997153 2021-05-14 19:47:15.997159
Traceback (most recent call last):
File "example.py", line 469, in
rfig = cerebro.plot(volume=False,
File "/local/lib/python3.7/site-packages/backtrader/cerebro.py", line 970, in plot
if self._exactbars > 0:
AttributeError: 'Cerebro' object has no attribute '_exactbars'