Model columns can't be null. They're only null when (a) https://github.com/casacore/python-casacore/issues/130 has its teeth in you, or (b) WSClean/DDFacet did not fill in the model properly (possibly because you had too many flags on the MS when predicting).
Both cases are Very Bad News actually, so I think the red warning should be upgraded to an exception.
(Or maybe add a parset option to throw an exception or not? Default being to throw.)
Model columns can't be null. They're only null when (a) https://github.com/casacore/python-casacore/issues/130 has its teeth in you, or (b) WSClean/DDFacet did not fill in the model properly (possibly because you had too many flags on the MS when predicting).
Both cases are Very Bad News actually, so I think the red warning should be upgraded to an exception.
(Or maybe add a parset option to throw an exception or not? Default being to throw.)