KidneyStoneCalculator

I’m trying to use the KidneyStoneCalculator extension, but my 3D view has nothing and Time of lithotripsy has nothing too.

With this error log:
1 - vtkMRMLTableNode::GetCellText failed: invalid column index -1
2 - Extensions-32448/KidneyStoneCalculator/lib/Slicer-5.6/qt-scripted-modules/KidneyStoneCalculator.py", line 480, in run vol_i=float(resultsTableNode .GetCellText(i,id_colone_vmm3)) ValueError: could not convert string to float: ‘’