[Bug] Error: $ operator is invalid for atomic vectors

[lhjohn]

There still is some problem related to the model settings. Now the situation is that modelSettings$settings is:

> modelSettings$settings
 cohortId outcomeId 
    20613     20700 

This is provided as parameter to editPreprocessing() in loadModelFromJson.R.

  plpModel <- editPreprocessing(modelSettings$settings)

Which then causes the following error, because it cannot be subset.

Error: $ operator is invalid for atomic vectors 

Interestingly, this error did not happen before the fix, but that was maybe because settings held only targetId and has now become a list of two elements once we added outcomeId.

[jreps]

can you send me this validation package with the error (it makes it easier for me to debug)?