Example chem4 inable to read the root output

I am trying to analyse the output of the example but i get an error however the CanvasInTab.hh is already added and i don’t know what to do in this case
: root [0]
Processing plotG.cc…
In file included from input_line_8:1:
/home/vgate/Software/Geant4/src/examples/extended/medical/dna/chem4/plot/plotG.cc:29:10: fatal error: ‘CanvasInTab.hh’ file not found
#include “CanvasInTab.hh”

_Geant4 Version:_11.1.1
_Operating System:_Ubuntu
_CMake Version:_3.22.1