Hi, I am newbie here. I want to run a backtest and optimization with Lean CLI and use historical BTC data from Kraken. I spent the entire day attempting to download the BTC data from Kraken but was unsuccessful. Below I’ve pasted the command prompts I used and the errors I encountered. If anyone has experience with Docker Container +Lean CLI + Kraken data ingestion, could you please share what I might be doing wrong or point me to a working workflow? Thank you in advance for any help.

System.ArgumentNullException: Value cannot be null. (Parameter 's')
at System.Convert.FromBase64String(String s)
at KrakenBrokerage.Initialize(String apiKey, String apiSecret, ...)

The Claude output
The Kraken downloader requires a valid API key, but it wasn't stored in your Lean config. (But, i have the Kraken and Secret keys in the lean.json file.)

Lean data download link
Please click on the link above to refer the outputs from the command prompt, after i run the “Lean data download”.
 

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