BoneThicknessMapping does not work

Hi guys, I’m try to use bone thickness mapping on my own data and demo data (Predentalsurgery).
But none of them worked.
The status kept showing Initializing execution, and the process was permanantly 0%.
When I checked the python console, it feeded back:

Initializing execution…
Traceback (most recent call last):
File “C:/Users/Administrator/Slicer 5.2.2/NA-MIC/Extensions-31382/BoneThicknessMapping/lib/Slicer-5.2/qt-scripted-modules/BoneThicknessMapping.py”, line 521, in click_execute
BoneThicknessMappingLogic.set_scalar_colour_bar_state(0)
File “C:/Users/Administrator/Slicer 5.2.2/NA-MIC/Extensions-31382/BoneThicknessMapping/lib/Slicer-5.2/qt-scripted-modules/BoneThicknessMapping.py”, line 936, in set_scalar_colour_bar_state
ctkBar = slicer.util.findChildren(colorWidget, name=‘VTKScalarBar’)[0]
IndexError: list index out of range
[Qt] This function is deprecated. Use lookFromAxis(const ctkAxesWidget::Axis& axis) instead.

Do anyone have any cues what it means? Thanks for you nice guys’ help.