Error message in 6.3.4 Counterfactual predictions

[josephogle]

Hi, thanks very much for this really wonderful resource.

I've been working through Ch.6 and have been getting the following error when attempting to predict counterfactual outcome values in section 6.3.4:

Error in private$.predict(task) : object 'preds' not found

Not sure if I'm doing something wrong here, but I noticed that another user appeared to be trying a work around (see here where the authors initially subset on treatment level before making predictions, which isn't right for their purpose and seems to me like they've had the same issue!).

Thanks very much for reading and any help would be hugely appreciated!

JO