Hi, I'm trying to implement a simple EMA crossover strategy as practice for learning the Quantconnect platform, and when I use the consolidated bars with a rolling window, I can only seem to chart up to a certain point before the chart gets cut off. The backtest is supposed to be from June 2019 to March 2020, but this is the result:

 

https://i.imgur.com/LZF3Ikc.png

Here is the code I'm using:

from System import *
from QuantConnect import *
from QuantConnect.Data import *
from QuantConnect.Algorithm import *
from QuantConnect.Indicators import *
from QuantConnect.Data.Consolidators import *
from datetime import datetime, timedelta
import decimal as d
import numpy as np

class ema_cross(QCAlgorithm):

def Initialize(self):
self.SetStartDate(2019, 6, 1) # Set Start Date
self.SetEndDate(datetime.now())

# Set up cash and BTC
self.SetCash("USD", 10000)
self.SetCash("BTC", 0)
self.crypto_pair = "BTCUSD"

# Set up basic symbol and fee structure
self.SetBrokerageModel(BrokerageName.GDAX, AccountType.Cash)
self.AddCrypto(self.crypto_pair, Resolution.Minute)

# warmup indicator
#self.SetWarmUp(timedelta(minutes=6000))


# Define our EMA resolution, lookback and
self.short_tf_resolution = 30
self.quick_lookback = 50
self.long_lookback = 200


# define ema_quick
self.ema_quick = ExponentialMovingAverage(self.crypto_pair, self.quick_lookback)
self.ema_quick.Updated += self.ema_quick_update
self.ema_quick_win = RollingWindow[IndicatorDataPoint](5)


# define ema_long
self.ema_long = ExponentialMovingAverage(self.crypto_pair, self.long_lookback)
self.ema_long.Updated += self.ema_long_update
self.ema_long_win = RollingWindow[IndicatorDataPoint](5)

## Consolidator
shortTimeFrameConsolidator = TradeBarConsolidator(timedelta(minutes=30))
shortTimeFrameConsolidator.DataConsolidated += self.shortTimeFrameHandler
self.RegisterIndicator(self.crypto_pair, self.ema_quick, shortTimeFrameConsolidator)
self.RegisterIndicator(self.crypto_pair, self.ema_long, shortTimeFrameConsolidator)
self.SubscriptionManager.AddConsolidator(self.crypto_pair, shortTimeFrameConsolidator)

def ema_quick_update(self, sender, updated):
self.ema_quick_win.Add(updated)

def ema_long_update(self, sender, updated):
self.ema_long_win.Add(updated)

def shortTimeFrameHandler(self, sender, bar):
if not (self.ema_quick_win.IsReady):
return
self.ema_quick.Update(bar.EndTime, bar.Close)
self.ema_long.Update(bar.EndTime, bar.Close)
self.Plot("Short EMA", self.ema_quick)
self.Plot("Long EMA", self.ema_long)

def OnData(self, data):
pass