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KeyError help?

Sorry in advance for the newbie question. Just getting my feet wet with the platform and experimenting.

I created a simple algorithm to get my feet wet, and it runs fine in the backtester but when I loaded into the contest for submission I got this error:

The error occurred on line(s) 27 with the high-level message, KeyError: 'mix_twitter'.

This was during market hours (not sure if that's a factor)

I just tried to submit the same algo to the contest just now after market hours (again not sure if that's a factor just want to state the facts) and got no such error.

Can anyone explain what might be going on?


Clone Algorithm
Backtest from to with initial capital
Total Returns
Max Drawdown
Benchmark Returns
Returns 1 Month 3 Month 6 Month 12 Month
Alpha 1 Month 3 Month 6 Month 12 Month
Beta 1 Month 3 Month 6 Month 12 Month
Sharpe 1 Month 3 Month 6 Month 12 Month
Sortino 1 Month 3 Month 6 Month 12 Month
Volatility 1 Month 3 Month 6 Month 12 Month
Max Drawdown 1 Month 3 Month 6 Month 12 Month
# Backtest ID: 55affde6ff8c9e0c654b4f91
There was a runtime error.
1 response

Looks like you ran into an error with Fetcher - it doesn't look backwards in the file. When you launched the algo, it looked for data today (7/22/2015), but it didn't find the data and crashed. To fix this, you can increment your data forward by one business day to begin live trading.



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