Share New Research 
Can anyone explain to me why I am getting the following error? When looking at the Order history, it does successfully buy and sell the mentioned ticker.
Runtime Error: Trying to retrieve an element from a collection using a key that does not exist in that collection throws a KeyError exception. To prevent the exception, ensure that the 'DUSL WK7PAZG36KIT' key exist in the collection and/or that collection is not empty.
at wrapped_function
raise KeyError(f"No key found for either mapped or original key. Mapped Key: {mKey}; Original Key: {oKey}")
File "/opt/miniconda3/lib/python3.6/site-packages/pandas/core/series.py" in PandasMapper.py: line 75 (Open Stacktrace)
Varad Kabade
Hi Axist,
In the above algorithm, inside the Initialize method, we are overriding the consolidators and the event handler inside the loop therefore, the last symbol for which we create will be assigned the event handler. To resolve the issue, we recommend implementing a SymbolData class to store the consolidator, implement the handler for each Symbol, and store it in a dictionary keyed by the Symbol.
Best,
Varad Kabade
Axist
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.
To unlock posting to the community forums please complete at least 30% of Boot Camp.
You can continue your Boot Camp training progress from the terminal. We hope to see you in the community soon!