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Juhwan Kim

Try inserting this line at the beginning of your code:

from AlgorithmImports import *

Vladimir,

That line was already added.

Just for following up… i also am having runtime error from getting market data. My algo cant fetch market data after the update. Please let me know if anyone having a same issue.

Hi Juhwan,

The error you get is when you access a dictionary with a key that does not exist in that dictionary.

Since you also get error with market data, then, you are most likely trying to access a DF from History that is empty.

It can be a temporary error on the QC side (market data is not available) or you are fetching data that does not exist, for instance, trying to call self.History(symbol, timedelta(1), Resolution.Minute) on a Sunday for a US stock.

Fred

Hi Juhwan, 

I am also getting a new error this morning that I've never gotten before (been running the algo every day for months). Could it be something on QC side?

Runtime Error: Trying to dynamically access a method that does not exist throws a TypeError exception. To prevent the exception, ensure each parameter type matches those required by the 'pandas.core.frame.DataFrame'>) method. Please checkout the API documentation.

Hi, @Juhvan Kim, without the code that you use hardly somebody can help you. I myself encountered this error, because this line

df=self.History(symbols, start, finish, Resolution.Minute, fillForward=True, extendedMarket=True)

that used to return some enumerable object that I was later converting to Pandas dataframe with

self.PandasConverter.GetDataFrame(df)

now returns DataFrame (like other History calls with different signature, which is actually an improvement), which causes second line to fail with this error. Perhaps you have something like this.

Hi Juhwan Kim Alexander Klochenok – please submit code examples so the community or QC team can quickly assist you. Unspecific reports are misleading and, 99% of the time related purely to the code running. 

Closing this thread as it's not constructive. Feel free to open new ones with support@quantconnect.com with code to reproduce the issues you're having, and Alex or I can assist. 

For following up again, I found an error. There was an error in my previous code and in the previous environment, no error message was shown up, and the algo worked fine as I intended (that's weird). 

What happened to me was that the new environment caught the error and it did not let the algo start. Hope this will help people who have been having the same issue.