Key error when opening example NWB file

[twheatcroft07]

I downloaded an example nwb file (from here). I want to open it and do some simple analysis (e.g. find the proportion of units that kilosort labelled 'good').

I tried to use code from the ecephys example jupyter notebook. I tried to run the code in the below screenshot, but it gives me an error. I know the dataset contains ecephys, and I can tell from the nwbwidget that the data I've downloaded has the appropriate info.

I'm sure this is a beginner's mistake, but I'm not sure how to get past it. Can anyone help?

[satra]

this particular file does not have anything under processing. on the file explorer, you can open the file in your browser using Neurosift. Click on open with and choose neurosift.

here is a direct link: https://neurosift.app/?p=/nwb&url=https://api.dandiarchive.org/api/assets/e1e626c9-f11e-4316-95b3-44c4f485d3ef/download/&dandisetId=000363&dandisetVersion=0.230822.0128

[twheatcroft07]

Thankyou!